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A temperature inversion is said to exist when atmospheric conditions cause temperature to increase with the altitude当大气条件促使温度随高度而增加时、就称为温度的逆变现象
F-is a natural product that occurs when something buns火是物体燃烧时产生的亠种自然物质
Modern dynamites can be defined a cap-sensitive mixtures which contain nitroglycerin as a sensitizer or as the principal means for developing energy, and which, when properly initiated, decompose at detonation velocity现代用的硝甘炸药可定义为雷管起爆型混合物。其中所含的硝化甘油敏化剂、或作为拓展能量的主要媒介、若适当起爆、雷管起爆型混合物则在爆轰速度下
No servant was available at that time when he waned to send a message他想送信时、身边没有仆人可差使
When a family member falls ill, all the others show considerate concern当家中有人生病、家人都显示出关怀体贴
When an explosive charge is detonated in rock, the charge is converted instantly to a hot gas at intense pressure当药包在岩体中爆炸时、炸药在高压力下瞬间转化为高温气体
Wild flyrock occurs due to the unexpected propulsion of rock fragments,when there is some abnormality in a blast or a rock mass, that travels beyond the blast clearance exclusion zone意外飞石的产生、是由于爆破过程或岩体中出现异常、致使破碎岩石出乎意料地飞越爆破禁区之外