Both variable orifices and electromagnetic controllers have been used with success.可变锐孔和电磁流量控制器都已成功地使用.Ground controllers will then fire the booster, sending the satellite into its proper orbit.然后地面控制人员将会发射推进器，把卫星送入正常轨道。...
' stood apart, with countenances of inflexible gravity , beyond what even the Puritan aspect could attain . "站在一旁, 他们脸上那种严肃刚毅的神情, 比清教徒们还 有过之而无不及.The artistic thing is, to unmask honest countenances!我承认,做起来是有困难的!She ...
Dena lit a cigarette, trying to mask her agitation.德娜点燃了一根烟，试图掩饰不安。He had no wish to uproot Dena from her present home.他没想过让德娜离开现在的家去别处居住。He went and poured a brandy for Dena and brought it to her.他走过去为德娜倒了一杯白兰地，端到她跟前。De...