钻石极抗磨损.Diamonds have extreme resistance to abrasion.过去曾设法用化学变性方法,提高纤维的抗磨损性能.There have been attempts to modify the fiber chemically to resist abrasion enhancement.工程陶瓷材料具有耐高温 、 耐腐蚀 、 抗磨损及抗热冲击等优点.Engineering ceramics feat...
这种微酸的味道是因为含有乳酸造成的。The somewhat acid flavour is caused by the presence of lactic acid.这种化学药品在我们的试验中起酸的作用.This chemical acts a part of an acid in our experiment.有些酸的酸性强得可以烧坏木头.Some acids are strong enough to burn the wood....
A variety of mechanical surfaces have been employed for deflecting the exhaust jets of solid - propellant rockets.人们已经用过各种类型的机械控制面来偏转固体推进剂火箭的排气流.A solid headspace capillary gas chromatography for the determination of res...
How any wars have been precipitated by firebrands!多少次战争是由于煽动者促成!Firebrands stream from his mouth ; sparks of shoot out.从它口中发出烧着的火把,与飞迸的火星.Firebrands stream from his mouth ; sparks of fire shoot out.19从它口中发出烧着的火把,与飞迸的火星....
Repton reached the final, and since around 1,500 schools entered the competition, that was no mean achievement.雷普顿进入了决赛，鉴于有1,500所左右的学校参与了角逐，能够取得这样的成绩相当了不起。It was a mere nothing before Repton took it in hand.勒普顿没经手改造之前,它原...