物理性污染

与普通光污染一样，海上光污染也属于物理性污染。

The light pollution at sea belonged to the physical pollution , so does the common light pollution .

光污染是工业发展的副产品，属于物理性污染，大部分来自低效率、非必要的人造光源，例如家居照明、工厂、写字楼、街灯、广告、大型露天运动场及其它商业产品。

Light pollution is by-product of industrial development , it belongs to physical pollution , and most of it come from low efficiency , non-essential artificial light , such as families , factories , office buildings , streetlight , advertisement , large stadiums and other commercial products .

从物理性污染和化学性污染两方面分析了NHD脱硫溶液污染的原因；

Cause of NHD de-sulfur solution pollution was analyzed from two aspects of physical & chemical pollutions ;

另处，物理性污染没有后效作用，即噪声不会残存在环境中，噪声停止，污染立即消失。

Noise is transient ; once the pollution stops , the environment is free of it .

但该管理体系并不是零风险系统，而是设法使各种危害的风险降低到最低限度，是一个使优质肉鸡生产过程免受生物、化学和物理性危害污染的管理工具。

HACCP was not zero risk system and can make the risks of all kinds of hazards reduced to the lowest limitation . HACCP was the manage tool which can avoid biological , chemical and physical hazard in the manufacture process in quality broiler .