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...
Macaulay represents Charles II as a faithless fanatic.麦考莱把查理二世描写为无信义的狂热者.The man is a fanatic who is determined to wipe out any opposition to the way he conducts himself.这人是个狂热分子，决意扫除任何反对其行事作风的声音。Alexander is a football ...
...the tawdry business of day-to-day bartering and bargaining.日复一日做交易讨价还价，让人不胜其烦...tawdry jewellery.廉价珠宝...the yawning gulf between her fantasies and the tawdry reality.她的幻想和冷酷的现实之间的巨大差距She slopped about her room, unkemp...
这种疼痛是由于血管的收缩而引起的。The pain is produced by constriction of the blood vessels.血管的突然破裂往往会造成外伤的痕迹.The rupture of a blood vessel usually cause the mark of a bruise.血管的排列有无数的变异.There are innumerable variations in the arrangemen...
But some bitter substances in It'such as elaterin are unacceptable.由于苦瓜含有苦瓜素等物质,苦味较重,令一些消费者难以接受.Stressed plants diminish osmotic potential by accumulating free amino acids, ions and dissolvable substances.被盐胁迫的植物因自由...