Clouds are formations of condensed water vapour.云是由凝聚的水蒸气构成的.Vapour phase chromatography has rapidly become one of the most successful analytical techniques.气相色谱法已经迅速成为最成功的分析方法之一.All condensers work by removing heat from...
镭可以用来治疗癌症.Radium can be used to treat cancer.氡是镭的子体.Radon is the daughter of radium.镭在离它的原始母体一定距离上固定下来.Radium can be fixed some distance from its original source....
蛇蜥其实不是蛇，而是无脚的蜥蜴。The slow-worm is in fact not a snake but a legless lizard.从智识、道德和现实的角度来看，这一论点是站不住脚的。This argument is untenable from an intellectual, moral and practical standpoint.持相反的论点就是试图为站不住脚的事情强辩。To argue otherwise ...
This safety invention will eject the pilot from a burning plane.这个安全装置会把飞行员从燃烧着的飞机中弹出.Plastic injection mould , coolant passages, eject pin and electrical heating holes.塑胶射出模具?冷却水孔 、 射梢孔及电热孔.Plastic injection mould - coo...