镍是煤中毒害性元素之一，燃煤过程中镍对大气、水、土壤、生物的危害性是不可低估的。
Nickel is the one of hazardous elements in coal. Nickel does enormous harm to air water soil and organism in coal combustion.
森林灾害是指在自然变异和人为影响对生物圈及人类社会产生危害性后果的事件。
The forest disaster mentioned here refers to the hazardous effect on biosphere and human society caused by nature and humans destroy.
这对激光在生物和医学中的应用及其危害性的研究具有重要意义。
It is suggested that it is very important to study the application in biology and medicine, and its harmful effects of lasers.
应用推荐