Oxygen obtained from liquefied air is usually about 99.5 % pure.由液化空气所取得的氧其纯度通常约为99.5%.The production of cold involves the production of liquefied gases.冷量生产涉及到液化气的生产.Chlorine is usually liquefied before use or storage.氯...
The production of cold involves the production of liquefied gases.冷量生产涉及到液化气的生产.It is best fit for pouring liquefied gas bottle, inversing bottle and adding gas for motorcar.该泵最适合于液化气瓶的罐装、倒罐及汽车燃料加气.Oxygen obtained from l...
Miriam's voice was strangely calm.米里亚姆的声音异乎寻常地平静。Her real name had been Miriam Pinckus.她的真名叫米丽娅姆·平卡斯。Miriam's voice was strangely calm...米里亚姆的声音异乎寻常地平静。Miriam was too frightened to tell her family what had happ...
A tiny insect , trying to shake a mighty tree, is ludicrously ignorant of its own weakness.蚍蜉撼大树, 可笑不自量.It transpires that the chest a valuable antique and the price I paid is ludicrously low.大家都知道这个衣柜很值钱,但是我支付的价格却离奇的低.T...