消防员须身穿保护装置及正压呼吸设施.Firemen should wear proper protective equipment and positive pressure self - contained breathing apparatus.可以工作在正压或负压下, 简单的螺丝刀调节, 多种弹簧可选.They work under pressure or suction. Simple screwdriver adjustmen...
...an ambassadorial post.大使级职位Sino - American Ambassadorial Talks ( 1955 - 1958 )中美大使级会谈研究 ( 1955-1958年 )Only two women hold ambassadorial rank.只有两位妇女担任大使.Potential members include Ambassadorial Scholars , Rotaractors, a...
The nature of the polymer is currently a trade secret.这一聚合物的性质目前是个商业机密。They issue a fixed number of shares that trade publicly.他们发行一定数量的可公开交易的股票。Anita Loos was in many respects untypical of the screenwriting trade.在许多方面，...
有限的证据认为鹿和猪有易感性.Limted evidence suggests susceptibility in deer and swine.这种易感性可能不仅仅是由于民族遗传差异.This susceptibility might not be due merely to ethnic genetic differences.研究TLR9基因多态性与肺癌易感性的关系.To study the association between...