可以将二氧化碳液化，以便和其他成分分开。You can liquefy the carbon dioxide to separate it from the other constituents.问题是沙质土壤的液化作用.The problem was one of liquefaction of the sandy soil.由液化空气所取得的氧其纯度通常约为99.5%.Oxygen obtained from liquefied a...
展出的有用玉石 、 琥珀和紫水晶做的耳环 、 项链和手镯.On display are earrings, necklaces and bracelets made from jade, amber and amethyst.本厂 长期 供应和生产玉石与玛瑙制品.This factory long - term supply and production jade and agate product.本文提出玉石品种鉴定的新方法———激...