2019-06-13
重复使用超市购物袋减少塑料垃圾污染，做一个积极的环保人士
Supermarket shopping bags are reused to reduce plastic waste pollution and become a loving environme...
环境
2018-10-26
应用科技：大气污染处理：室外超级离子大气处理单元
Applied science and technology: air pollution treatment: outdoor super ion atmospheric processing un...
2018-10-26
最简单的空气质量检测方法：A4纸、白纸检测空气质量
The simplest method of air quality testing: A4 and white paper to check the air quality. 一般人都只根据一片蓝天...