较轻的推进器采用液态氢, 较重的采用自燃推进剂.The lighter version used liquid hydrogen, the heavier used hypergolic propellants.这个工厂为弹道导弹生产推进剂。The factory produces propellant for ballistic missiles.挤压 式 发动机对推进剂中溶解的气体特别敏感.Pressure - fed engine...
宫殿里到处都是无价的古玩.The palace is full of priceless antiques.家具古老而舒适 —— 有皮靠背椅, 报纸架, 无价的古董桌子.The furniture was old and comfortable - leather couches, newspaper racks, priceless antique tables.这些无价的书册能够帮助人们正确地发音及了解文法重点.These inva...
...a blue and gold caravan, slightly travel-stained but otherwise in good condition.除了在旅途中弄得有点脏以外，性能良好的蓝金色旅行拖车Pendergood had shovelled the sand out of the caravan.彭德古德把旅行拖车里的沙子铲了出来。The community advisor gave us a caravan...
我想后天帮他办理手续，结账离开这里。I'd like to check him out of here the day after tomorrow.我想在清晨结账离开旅馆.I'd like to book out early in the morning.给我结账的姑娘奇怪地打量了我一下.The girl who checked me out looked at me strangely....
The nano filtration membrane is composed of nanometer grade micropore capillary tube bundles.所述的纳滤膜是由纳米级微孔毛细管束构成.I flunked math in second grade.我二年级时数学不及格。The front end is equipped with hydraulic jacks used for grade adj...