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...
The study indicates that the film belongs to a zinc blende structure.分析表明,该薄膜的结构符合闪锌矿的特征.Die Blende ist nichts anderes , als ein in seinem Durchmesser variables Loch.快门并不是什么特别的东西, 它只是可以调节宽度的缝隙.The main mineral compositio...
IBM is considered the bellwether stock on Wall Street.国际商用机器公司的股票行情被视为华尔街股市的风向标。For decades the company was the bellwether of the British economy...几十年来，这家公司一直是英国经济的晴雨表。University campuses are often the bellwether of cha...
This kind of living was beginning to fray her nerves.这种生活开始让她神经紧张。Tempers began to fray as the two teams failed to score.随着两队都没能破门得分，大家渐渐沉不住气了。He would be inspiring young people to get into the political fray.他会激励年轻人投身政治...
他的想法就是将几何学应用在力学上。His idea was to apply geometry to dynamics.那男孩煞费苦心地钻研几何学.The boy puzzled his way through geometry.严密为哲学而不为几何学所关心.Rigour is the concern of philosophy and not of geometry....