Ultraviolet radiation may also damage marine life by killing one- celled plants called phytoplankton, which form the base of the ocean's food chain.
紫外线辐射还可以通过杀死单细胞的浮游植物来破坏海洋生命，这种浮游植物是构成海洋食物链的基础。
This thesis mainly introduces the developing course of the vacuum killing arc room possessing the cup form horizontal magnetic field in detail.
本论文主要对杯状横向磁场触头结构真空灭弧室的研制过程进行了详细的阐述。
The toxicity, form, and field efficacy tests have shown that the title product's killing ability for weeds and its security for rice are similar to those produced abroad.
对本试验合成产品进行的毒性、剂型和田间药效验证表明，其除草特性和对水稻的安全性与国外同类产品相一致。
The toxicity, form, and field efficacy tests have shown that the title product's killing ability for weeds and its security for rice are similar to those produced abroad.
对本试验合成产品进行的毒性、剂型和田间药效验证表明，其除草特性和对水稻的安全性与国外同类产品相一致。
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