This paper makes an introduction of the principles, composition and operating method of this determinator.介绍了仪器的原理 、 组成及使用方法.The principle, structure and characteristic of Hydrogen determinator and it's application ...
The gemological refractometer is characterized by small volume and less weight.这种宝石折射仪的特点是小巧轻便.It dark green, light yellow - green spots, other gemological properties similar to omphacitic jade.它呈深绿色, 有淡黄绿色斑点, 其他宝石学特徵与绿辉...
我们排在护送队伍的最前面。We took our place at the head of the convoy.他命令联合舰队将军队护送到那不勒斯。He ordered the combined fleet to convoy troops to Naples.快到9点半的时候，他在一名警察的护送下到达了。He arrived with a police escort shortly before half past nine....
This collotype of the Mona Lisa is exquisitely printed.这幅珂罗版的《蒙娜丽莎》,印刷相当精美.The reproduction of and paintings by collotype printing can obtain a high fidelity.采用珂王罗版印刷方式复制字画可达到还原逼真的艺术效果....
The increase of carbon equivalent is primary reason for graphite floatation.碳当量高是引起石墨漂浮的主要原因.In graphite sheets, carbon atoms bond together in rings...石墨层中的碳原子相互连接形成碳环。A powerful electric current is passed through a piec...