平凉2019/1/1-2019/12/31空气质量数据下载，平凉空气污染指数查询_平凉AQI历史数据下载

视野空气质量-空气污染指数查询站+关注

当前位置：首页 > 空气数据 > [平凉] - 平凉空气质量数据下载

平凉2019空气质量数据

更多下载与查询

平凉2019年空气质量数据已查询136次

平凉空气质量数据（2019/1/1-2019/12/31）
数据单位：μg/m³（co为mg/m³）
日期	AQI	PM2.5	SO2	PM10	O3	NO2	CO	温度? 更多参数请点击【平凉天气】	湿度
2019/12/31	54	22	10	58	48	32	0.6	-5	52
2019/12/30	58	18	17	50	58	46	0.6	-4	44
2019/12/29	44	18	12	42	73	35	0.8	1	35
2019/12/28	72	20	20	59	44	57	1	0	40
2019/12/27	65	20	16	52	60	52	0.6	-1	35
2019/12/26	63	19	21	56	44	50	0.8	-5	37
2019/12/25	85	56	8	120	68	32	0.8	-3	63
2019/12/24	129	98	8	160	35	55	1.2	-2	85
2019/12/23	73	52	12	96	46	56	0.9	-1	68
2019/12/22	70	34	20	67	44	56	1	0	43
2019/12/21	73	26	16	59	40	58	0.8	0	42
2019/12/20	70	34	17	72	42	56	1	-3	66
2019/12/19	63	22	14	50	62	50	0.8	-2	54
2019/12/18	55	18	13	40	66	44	0.6	-1	46
2019/12/17	40	15	6	32	80	21	0.4	0	46
2019/12/16	56	26	8	62	83	30	0.6	0	70
2019/12/15	75	55	8	84	32	40	0.8	-1	92
2019/12/14	107	80	8	131	56	44	1	1	83
2019/12/13	74	39	15	86	54	59	1	0	72
2019/12/12	71	38	16	92	44	52	1.1	-1	70
2019/12/11	65	20	18	60	55	52	0.8	1	40
2019/12/10	63	18	17	55	60	50	0.8	2	34
2019/12/9	67	19	14	50	58	53	0.8	4	29
2019/12/8	65	26	19	58	58	52	0.8	3	39
2019/12/7	70	47	20	87	56	56	1	0	69
2019/12/6	78	47	20	97	40	62	0.9	-1	66
2019/12/5	68	22	17	54	56	54	0.8	-1	44
2019/12/4	60	23	18	57	63	48	0.8	-1	46
2019/12/3	60	23	14	52	58	48	0.8	-1	44
2019/12/2	63	27	18	64	53	50	0.8	-5	61
2019/12/1	48	18	12	48	84	32	0.6	-2	46
2019/11/30	41	16	6	41	74	17	0.4	-1	63
2019/11/29	77	56	12	94	36	38	0.9	-1	86
2019/11/28	62	44	6	68	18	40	0.7	-1	96
2019/11/27	56	30	12	62	58	40	0.8	1	68
2019/11/26	52	31	8	54	34	34	0.7	-2	92
2019/11/25	42	18	10	42	54	32	0.5	-4	85
2019/11/24	37	11	6	28	73	22	0.2	-1	46
2019/11/23	64	26	12	78	76	34	0.6	4	47
2019/11/22	75	54	13	99	32	50	1	2	86
2019/11/21	68	46	8	86	20	44	1	0	99
2019/11/20	53	18	8	53	52	42	0.6	3	88
2019/11/19	63	20	15	69	48	50	0.8	4	60
2019/11/18	69	24	16	88	54	52	0.8	0	43
2019/11/17	118	36	4	186	74	20	0.4	1	42
2019/11/16	69	24	16	87	32	52	0.8	6	63
2019/11/15	68	18	13	64	64	54	0.7	7	50
2019/11/14	66	28	18	82	56	52	1	6	49
2019/11/13	40	18	10	40	66	32	0.5	3	47
2019/11/12	48	18	8	46	76	38	0.6	5	56
2019/11/11	78	28	20	75	15	62	1	5	58
2019/11/10	63	15	12	39	67	50	0.6	6	55
2019/11/9	57	34	10	64	74	42	0.8	5	88
2019/11/8	58	32	10	59	40	46	0.8	5	97
2019/11/7	59	22	11	42	75	47	0.8	6	85
2019/11/6	50	17	9	30	67	40	1	7	90
2019/11/5	66	46	10	82	46	52	1	6	96
2019/11/4	62	36	10	72	72	49	0.9	7	83
2019/11/3	55	21	10	50	82	44	0.6	8	74
2019/11/2	55	24	10	54	60	44	0.8	7	80
2019/11/1	60	22	10	50	34	48	0.7	7	94
2019/10/31	63	18	10	52	36	50	0.6	6	70
2019/10/30	60	19	6	58	81	48	0.4	9	34
2019/10/29	62	20	12	64	66	49	0.6	9	43
2019/10/28	68	22	10	86	82	47	0.6	8	37
2019/10/27	53	16	8	40	84	42	0.5	8	43
2019/10/26	53	14	9	40	80	42	0.5	7	47
2019/10/25	53	12	7	41	55	42	0.4	5	61
2019/10/24	38	14	7	28	76	28	0.3	3	73
2019/10/23	44	20	6	44	62	30	0.7	9	93
2019/10/22	55	21	11	52	24	44	0.8	8	99
2019/10/21	52	21	8	50	62	41	0.6	7	91
2019/10/20	65	18	6	80	89	40	0.4	10	64
2019/10/19	58	20	4	66	87	30	0.4	10	75
2019/10/18	53	28	7	56	42	42	0.8	7	96
2019/10/17	50	16	6	40	66	40	0.6	8	84
2019/10/16	47	14	6	24	94	28	0.6	7	73
2019/10/15	29	12	5	24	44	23	0.6	6	96
2019/10/14	46	16	5	36	91	30	0.4	11	81
2019/10/13	55	16	6	42	70	44	0.4	11	75
2019/10/12	50	13	8	40	94	40	0.4	12	60
2019/10/11	50	12	6	30	89	40	0.4	12	50
2019/10/10	52	14	5	39	80	41	0.4	12	63
2019/10/9	40	22	6	40	70	30	0.5	9	89
2019/10/8	46	11	6	27	92	26	0.5	10	79
2019/10/7	40	14	6	25	79	29	0.4	10	82
2019/10/6	43	9	5	14	86	17	0.4	9	89
2019/10/5	30	8	5	16	40	24	0.4	10	92
2019/10/4	33	12	4	33	58	12	0.3	12	81
2019/10/3	126	32	6	74	188	30	0.5	15	78
2019/10/2	52	16	5	33	102	22	0.5	15	83
2019/10/1	62	26	8	52	114	26	0.4	16	83
2019/9/30	77	19	6	50	132	32	0.5	15	81
2019/9/29	50	18	6	41	100	36	0.4	15	80
2019/9/28	48	10	7	34	60	38	0.4	15	71
2019/9/27	52	16	6	38	102	36	0.4	14	82
2019/9/26	55	14	6	34	100	44	0.5	13	77
2019/9/25	55	10	5	30	106	40	0.4	14	67
2019/9/24	78	12	4	28	133	37	0.4	14	62
2019/9/23	70	14	6	36	123	44	0.4	14	71
2019/9/22	62	9	6	29	114	38	0.4	13	73
2019/9/21	57	9	4	24	108	32	0.3	13	65
2019/9/20	55	12	4	36	106	36	0.3	15	65
2019/9/19	38	8	5	20	76	26	0.4	12	94
2019/9/18	47	10	6	26	94	30	0.4	12	86
2019/9/17	48	12	5	25	96	36	0.4	13	89
2019/9/16	54	8	6	28	104	32	0.4	13	85
2019/9/15	38	10	6	26	61	30	0.4	12	93
2019/9/14	43	10	6	20	80	34	0.4	11	96
2019/9/13	43	10	10	16	49	34	0.4	11	95
2019/9/12	45	6	6	10	90	16	0.4	14	94
2019/9/11	42	7	6	10	83	22	0.6	16	97
2019/9/10	37	7	6	14	74	24	0.4	16	91
2019/9/9	40	10	5	17	80	26	0.5	16	98
2019/9/8	62	12	6	34	114	32	0.5	20	82
2019/9/7	66	18	6	46	119	38	0.6	20	84
2019/9/6	46	17	8	42	92	32	0.6	19	86
2019/9/5	42	15	6	32	70	33	0.6	17	91
2019/9/4	42	26	8	42	77	30	0.6	15	98
2019/9/3	49	20	8	42	98	36	0.6	16	88
2019/9/2	63	13	6	28	115	31	0.4	17	81
2019/9/1	43	17	6	36	86	29	0.4	16	90
2019/8/31	37	10	5	22	74	26	0.4	14	96
2019/8/30	72	8	4	24	126	22	0.4	16	78
2019/8/29	43	8	6	22	85	27	0.3	18	64
2019/8/28	48	8	4	22	96	31	0.4	18	85
2019/8/27	62	6	4	16	114	30	0.4	18	79
2019/8/26	48	11	6	17	96	28	0.5	17	95
2019/8/25	44	7	6	17	88	25	0.6	19	88
2019/8/24	38	6	6	12	70	30	0.6	18	93
2019/8/23	35	8	5	18	58	28	0.6	15	99
2019/8/22	45	6	4	8	90	29	0.4	15	99
2019/8/21	40	7	4	13	80	30	0.4	15	96
2019/8/20	42	8	3	20	83	16	0.4	15	95
2019/8/19	92	23	8	48	150	24	0.8	22	79
2019/8/18	117	14	10	44	178	40	0.7	21	63
2019/8/17	95	8	8	35	154	36	0.6	20	58
2019/8/16	65	8	6	45	118	29	0.4	22	47
2019/8/15	89	8	6	28	146	40	0.4	23	51
2019/8/14	70	7	5	22	124	32	0.4	21	55
2019/8/13	67	10	5	48	120	27	0.4	20	56
2019/8/12	75	8	6	20	129	30	0.4	21	51
2019/8/11	62	6	4	22	114	30	0.3	21	51
2019/8/10	83	8	4	30	139	34	0.3	23	45
2019/8/9	66	6	6	16	119	30	0.3	22	58
2019/8/8	50	8	6	27	100	32	0.4	19	77
2019/8/7	62	8	9	24	114	27	0.5	21	76
2019/8/6	73	6	7	19	127	28	0.4	21	69
2019/8/5	40	8	6	22	80	32	0.5	20	81
2019/8/4	65	6	6	13	117	32	0.4	21	75
2019/8/3	46	5	6	8	92	22	0.4	20	82
2019/8/2	40	8	10	21	77	32	0.4	19	89
2019/8/1	70	6	6	20	124	30	0.4	21	65
2019/7/31	90	8	6	31	147	26	0.4	22	55
2019/7/30	79	8	6	32	134	30	0.4	22	56
2019/7/29	75	9	4	20	130	19	0.4	21	64
2019/7/28	63	18	7	76	104	26	0.4	24	68
2019/7/27	83	31	6	116	123	32	0.4	24	61
2019/7/26	50	7	5	32	99	30	0.5	27	54
2019/7/25	70	7	6	33	124	32	0.5	23	60
2019/7/24	61	14	4	53	113	26	0.3	21	59
2019/7/23	74	8	4	30	128	27	0.4	22	60
2019/7/22	60	10	5	42	112	23	0.4	21	67
2019/7/21	40	8	6	18	68	32	0.5	19	90
2019/7/20	69	4	8	16	122	33	0.4	22	65
2019/7/19	48	7	5	14	96	26	0.5	19	82
2019/7/18	48	6	12	14	96	28	0.6	19	88
2019/7/17	42	7	8	14	84	24	0.4	18	93
2019/7/16	46	8	8	18	92	22	0.4	18	91
2019/7/15	61	6	6	23	113	26	0.4	20	77
2019/7/14	85	7	6	25	142	36	0.4	21	63
2019/7/13	112	10	4	22	173	34	0.4	21	61
2019/7/12	70	10	6	28	124	40	0.4	20	69
2019/7/11	49	14	9	38	97	36	0.5	17	79
2019/7/10	80	10	6	22	136	30	0.4	18	66
2019/7/9	54	12	7	24	104	32	0.4	15	86
2019/7/8	63	8	6	12	115	20	0.4	14	93
2019/7/7	87	8	6	30	144	28	0.3	19	52
2019/7/6	73	8	5	36	127	28	0.3	20	44
2019/7/5	80	17	6	109	134	38	0.3	23	46
2019/7/4	93	8	6	24	151	33	0.4	21	54
2019/7/3	60	8	6	26	112	32	0.4	20	63
2019/7/2	64	8	7	30	116	39	0.4	21	59
2019/7/1	72	8	8	30	126	39	0.4	20	53
2019/6/30	75	8	5	30	130	35	0.4	20	51
2019/6/29	51	9	5	36	101	34	0.3	21	44
2019/6/28	57	8	6	25	108	36	0.4	19	60
2019/6/27	48	6	4	10	96	17	0.4	16	88
2019/6/26	54	16	6	30	104	33	0.6	17	93
2019/6/25	48	17	6	34	95	29	0.6	19	88
2019/6/24	53	33	10	56	88	33	0.6	17	99
2019/6/23	59	23	12	46	110	40	0.6	18	91
2019/6/22	57	12	8	14	108	24	0.6	16	99
2019/6/21	36	10	8	12	72	24	0.6	16	99
2019/6/20	41	12	4	22	82	30	0.5	16	99
2019/6/19	43	14	6	30	83	34	0.5	18	94
2019/6/18	76	14	8	34	131	38	0.4	18	80
2019/6/17	65	10	6	34	118	36	0.4	18	75
2019/6/16	75	8	4	28	129	28	0.4	18	69
2019/6/15	40	11	4	37	80	22	0.4	16	86
2019/6/14	72	9	5	38	126	38	0.5	19	72
2019/6/13	87	10	6	40	144	30	0.4	18	73
2019/6/12	77	10	6	36	132	32	0.4	18	80
2019/6/11	55	12	9	42	106	40	0.6	19	70
2019/6/10	82	10	6	36	138	34	0.4	20	54
2019/6/9	84	8	8	36	140	32	0.4	19	70
2019/6/8	84	9	6	36	140	30	0.4	15	92
2019/6/7	75	14	10	56	129	36	0.6	19	77
2019/6/6	64	14	10	52	116	35	0.6	19	74
2019/6/5	78	6	6	18	133	27	0.4	16	82
2019/6/4	50	14	7	50	91	39	0.5	17	63
2019/6/3	83	14	9	63	139	40	0.5	21	35
2019/6/2	67	16	6	72	120	34	0.4	19	35
2019/6/1	77	14	6	72	132	36	0.4	15	53
2019/5/31	75	11	6	48	129	27	0.5	16	44
2019/5/30	87	12	8	46	144	30	0.6	17	53
2019/5/29	45	13	12	38	76	36	0.6	10	89
2019/5/28	45	10	12	25	89	24	0.5	9	83
2019/5/27	55	10	6	42	106	12	0.4	11	46
2019/5/26	109	24	4	168	118	7	0.4	18	20
2019/5/25	91	20	24	90	149	26	0.6	22	46
2019/5/24	84	14	10	56	140	42	0.6	20	54
2019/5/23	81	12	8	68	137	38	0.6	18	45
2019/5/22	92	10	8	52	150	31	0.6	18	33
2019/5/21	79	13	6	64	134	28	0.5	16	44
2019/5/20	66	14	7	73	119	29	0.4	12	38
2019/5/19	131	32	5	211	110	14	0.4	13	33
2019/5/18	98	42	10	146	84	36	0.6	16	74
2019/5/17	55	14	8	52	105	30	0.6	15	74
2019/5/16	151	52	8	252	109	29	0.6	14	61
2019/5/15	338	86	8	450	102	30	0.6	15	55
2019/5/14	135	40	12	219	92	40	0.6	13	73
2019/5/13	168	52	8	286	103	30	0.6	13	51
2019/5/12	480	130	6	580	106	18	0.4	11	38
2019/5/11	73	10	8	29	127	34	0.4	16	47
2019/5/10	67	10	6	28	120	36	0.6	13	61
2019/5/9	55	10	7	22	105	29	0.6	10	75
2019/5/8	60	10	6	21	111	22	0.6	9	75
2019/5/7	50	10	7	12	100	26	0.6	6	99
2019/5/6	60	20	6	26	112	22	0.6	9	99
2019/5/5	48	18	6	30	96	30	0.6	13	95
2019/5/4	54	31	6	58	92	34	0.7	12	87
2019/5/3	68	40	10	85	94	34	0.8	10	94
2019/5/2	66	25	10	82	114	20	0.7	13	67
2019/5/1	78	21	12	106	95	38	0.6	10	62
2019/4/30	65	16	8	80	118	20	0.5	12	52
2019/4/29	67	22	12	54	120	27	0.6	11	81
2019/4/28	42	24	10	42	70	27	0.8	11	90
2019/4/27	69	16	6	32	122	16	0.6	13	77
2019/4/26	77	28	8	104	116	34	0.7	15	66
2019/4/25	73	24	8	95	120	36	0.5	18	43
2019/4/24	105	34	8	160	110	36	0.6	16	52
2019/4/23	72	23	10	58	126	37	0.8	15	73
2019/4/22	52	24	8	54	100	28	0.7	13	80
2019/4/21	62	16	7	74	107	28	0.5	14	56
2019/4/20	67	22	7	84	92	26	0.4	13	71
2019/4/19	85	30	11	92	141	24	0.8	17	67
2019/4/18	75	12	9	40	130	34	0.6	19	42
2019/4/17	65	16	12	66	118	44	0.6	19	39
2019/4/16	71	16	9	92	116	39	0.6	15	43
2019/4/15	58	24	12	66	98	41	0.7	8	63
2019/4/14	65	17	9	80	99	36	0.4	9	33
2019/4/13	49	16	6	46	97	30	0.4	10	59
2019/4/12	52	24	7	48	102	30	0.5	8	69
2019/4/11	65	12	7	48	118	28	0.4	10	39
2019/4/10	48	8	6	30	96	23	0.4	9	59
2019/4/9	50	8	6	16	100	12	0.3	9	60
2019/4/8	84	13	8	83	140	19	0.6	15	45
2019/4/7	90	14	9	130	127	34	0.5	16	24
2019/4/6	103	22	7	156	110	32	0.6	15	18
2019/4/5	72	14	10	56	126	36	0.4	14	16
2019/4/4	87	30	10	70	144	44	0.5	12	47
2019/4/3	75	34	14	76	129	44	0.6	10	54
2019/4/2	76	26	16	84	131	44	0.6	11	31
2019/4/1	75	28	14	82	130	48	0.6	10	32
2019/3/31	69	20	14	70	122	43	0.4	7	27
2019/3/30	62	19	12	74	96	34	0.4	7	16
2019/3/29	79	18	6	108	102	20	0.4	10	16
2019/3/28	123	38	8	196	108	35	0.5	10	29
2019/3/27	79	28	8	108	113	30	0.6	13	17
2019/3/26	67	24	9	84	105	35	0.6	11	25
2019/3/25	71	26	9	91	122	46	0.8	8	35
2019/3/24	67	32	12	84	112	44	0.8	6	33
2019/3/23	58	18	13	66	101	34	0.5	4	24
2019/3/22	73	24	14	95	92	42	0.6	3	29
2019/3/21	82	23	12	114	90	46	0.4	3	18
2019/3/20	112	31	5	174	98	22	0.3	6	40
2019/3/19	70	26	16	73	71	56	0.7	8	51
2019/3/18	59	22	10	68	98	45	0.6	9	44
2019/3/17	51	20	10	51	86	40	0.5	7	37
2019/3/16	62	20	10	56	114	44	0.6	8	36
2019/3/15	55	14	10	46	106	32	0.5	6	24
2019/3/14	55	14	10	39	106	33	0.5	5	27
2019/3/13	52	22	9	54	102	41	0.5	5	29
2019/3/12	58	18	11	66	103	39	0.6	5	28
2019/3/11	53	17	10	56	102	38	0.4	3	31
2019/3/10	58	18	8	66	105	21	0.4	6	37
2019/3/9	68	21	11	86	114	36	0.5	6	36
2019/3/8	79	54	14	107	80	46	0.9	3	78
2019/3/7	92	68	8	100	87	36	1.2	2	83
2019/3/6	59	24	11	54	110	34	0.4	4	37
2019/3/5	65	34	13	60	118	32	0.6	6	34
2019/3/4	59	42	8	58	74	33	0.6	3	74
2019/3/3	64	46	6	65	51	28	0.8	0	96
2019/3/2	69	50	4	68	86	21	0.7	0	97
2019/3/1	98	73	6	96	64	38	1	0	99
2019/2/28	82	60	6	84	76	31	0.8	-1	93
2019/2/27	69	50	6	64	96	29	0.8	0	87
2019/2/26	64	46	7	68	65	34	0.8	0	98
2019/2/25	78	57	9	90	78	45	1	1	82
2019/2/24	97	72	6	98	102	40	0.8	1	86
2019/2/23	54	34	12	58	102	40	0.6	1	54
2019/2/22	74	54	9	84	66	43	0.8	-2	89
2019/2/21	87	64	8	102	102	44	1	-1	83
2019/2/20	108	81	9	122	94	42	1.3	-1	82
2019/2/19	99	74	8	112	72	42	1.1	-4	90
2019/2/18	72	52	8	77	96	31	0.8	-4	87
2019/2/17	63	44	4	76	84	17	0.5	-5	95
2019/2/16	74	54	6	95	66	33	0.9	-5	75
2019/2/15	68	28	8	85	83	32	0.8	-3	37
2019/2/14	82	40	6	114	84	23	1	-2	55
2019/2/13	127	96	4	132	68	26	1.4	-3	83
2019/2/12	78	54	10	106	94	32	1.2	1	43
2019/2/11	104	78	7	115	83	28	1.4	-4	72
2019/2/10	65	43	5	79	84	14	0.9	-4	68
2019/2/9	64	22	4	77	74	10	0.6	-5	44
2019/2/8	87	28	6	124	74	11	0.5	-3	36
2019/2/7	69	31	8	87	90	16	0.7	0	30
2019/2/6	51	26	12	52	90	18	0.8	3	24
2019/2/5	71	48	18	92	97	22	1	2	38
2019/2/4	67	32	14	84	92	24	1	0	38
2019/2/3	72	26	8	93	88	16	0.6	-1	39
2019/2/2	90	32	4	130	82	15	0.6	-1	42
2019/2/1	63	38	10	76	82	28	1	-4	60
2019/1/31	58	28	5	66	80	18	0.6	-6	54
2019/1/30	69	33	8	88	61	27	0.7	-3	62
2019/1/29	55	39	16	54	80	40	0.8	1	33
2019/1/28	55	32	15	60	84	42	0.8	-1	41
2019/1/27	57	40	11	63	88	33	0.8	0	38
2019/1/26	109	82	24	135	60	60	1.4	-2	45
2019/1/25	69	40	18	88	78	40	0.8	-1	28
2019/1/24	69	46	14	88	69	46	1	-1	41
2019/1/23	55	35	9	60	82	43	0.8	-1	43
2019/1/22	65	35	14	60	68	52	0.8	-3	31
2019/1/21	52	30	12	48	78	41	0.8	-4	52
2019/1/20	63	42	12	76	62	34	0.6	-6	64
2019/1/19	53	27	10	56	77	32	0.6	-3	41
2019/1/18	61	38	9	72	88	30	0.6	-3	40
2019/1/17	67	48	12	76	69	48	1	-5	59
2019/1/16	67	48	8	78	58	44	0.6	-7	79
2019/1/15	48	23	5	48	74	18	0.4	-5	57
2019/1/14	63	34	7	75	81	32	0.4	-2	36
2019/1/13	73	44	14	74	78	58	0.8	-2	38
2019/1/12	75	51	18	89	64	60	1.1	-2	41
2019/1/11	88	65	16	110	63	60	1.1	-5	60
2019/1/10	97	72	16	119	76	48	1	-4	52
2019/1/9	163	124	14	171	45	48	1.2	-5	56
2019/1/8	61	39	11	71	61	44	0.6	-5	49
2019/1/7	59	36	6	68	84	25	0.4	-4	39
2019/1/6	140	107	10	159	81	48	1.4	-4	58
2019/1/5	112	84	10	122	66	60	1.2	-4	56
2019/1/4	97	72	14	107	67	44	1	-4	47
2019/1/3	120	91	9	126	86	41	0.9	-5	66
2019/1/2	170	129	21	162	74	59	1.4	-8	80
2019/1/1	82	60	18	86	74	45	1	-6	61
更多数据与问题请联系微信客服：xbcms6

查看更多

平凉历史空气质量数据

2019年

平凉数据订制服务

时间段订制
表头字段订制
数据整理订制
程序应用订制

公众号客服 man-yi-666
微信客服 xbcms6

保存数据查询入口

微信公众号快捷复制