screening agent 遮蔽剂 ; [试剂] 掩蔽剂 ; 发烟剂
sun-screening agent 防晒剂 ; 日光掩蔽剂 ; 防晒
ultra-violet light screening agent 光屏蔽剂
ultraviolet screening agent 抗紫外剂 ; 防紫外线剂
physical uv-screening agent 物理防晒剂
screening insurgoodce agent 遮盖剂
screening UV-ray agent 紫外线遮蔽剂
When I got to LAX, I approached the uniformed Transportation security Administration agent nearest the entrance to the security screening area.
在洛杉矶国际机场，我找到离安检处最近的一位身着制服的运输安全局工作人员。
The compounded smoke agent with this screening standard is smoking well, compounded easy, convenient to use, economic and worth being promoted.
在此筛选标准下配制的烟雾剂，发烟效果良好，配制简便，使用方便、经济，值得推广。
To remove main disturbing ion, chlorine ion in the COD potassium dichromate reflux method, silver sulfate replaces mercury sulfate as a screening agent.
对cod重铬酸钾回流法中的主要干扰离子，氯化物的消除，选择了用硫酸银代替硫酸汞做掩蔽剂。
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