The lighter version used liquid hydrogen, the heavier used hypergolic propellants.较轻的推进器采用液态氢, 较重的采用自燃推进剂.Pressure - fed engines are particularly susceptible to dissolved gas in the propellants.挤压 式 发动机对推进剂中溶解的气体特别敏感.Thi...
a child cringing in terror吓得直退缩的小孩He had a cringing manner but a very harsh voice.他有卑屈谄媚的神情,但是声音却十分粗沙.She's always cringing to the boss.她在上司面前总是卑躬屈膝....
“我想发份电报。”——“好的，发给谁？”"I want to send a telegram." — "Fine, to whom?"几天前，他收到劳埃德勋爵发来的一封电报。A few days earlier he had received a telegram from Lord Lloyd.如果我再肚子疼,我会发电报让你来.If I get another tummy ache, I will wire you to come....