Control system is set around the landfill to effectively avoid light waste spread out of the site resulting in white pollution.
填埋区周边建有防飞系统，有效防止轻质垃圾飞散场外，避免造成白色污染。
Nitric acid is not stable, easy to see light decomposition, should be in brown bottle in the shadows to avoid light preservation.
硝酸不稳定，易见光分解，应在棕色瓶中于阴暗处避光保存。
Nitric acid is not stable, easy to see light decomposition, should be in brown bottle in the shadows to avoid light preservation.
硝酸不稳定，易见光分解，应在棕色瓶中于阴暗处避光保存。
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