他们发现狄氏剂的挥发常随紧实度的增加而减低.They found volatilization of dieldrin tended to decrease as bulk density increased.狄氏剂与艾氏剂有关,对蚯蚓的毒性是相似的.Dieldrin is related to aldrin, and its toxicity to earthworms is similar....
We've taken on our full complement of new trainees.我们招收的新学员已经满额了.Trainees go through a four-hour lesson before they are let loose on the controls.受训人员须上4小时的课才能自由进行操作。The trainees were put through an assault course.受...
Replace with a new disc holder assembly and oring.用新的阀瓣固定器总成和O形 环更换....the European bantamweight title-holder.欧洲最轻量级冠军Portfolio, Name Card Holder, Pen, Briefcases, Computer Bags, Bags and Cases.采购产品文件夹, 名字备置卡片烛台, 钢笔, 公文包...