The crown is decorated with a stunning black onyx cabochon.表把顶部以一颗漂亮的圆顶形黑色缟玛瑙石装饰.She wears a Bulgari ring and necklace with cabochon sapphires and rubies with diamonds.她佩戴的是一款宝格丽的戒指,以及一条镶嵌鹅蛋形蓝宝石、红宝石与钻石的项链....
The programmer forms the heart of the process chromatograph.程序控制器是色谱仪的关键部件.The technique is known as adsorption chromatograph.这种分析技术称为吸附色谱.Figure B shows a scheme of a mass spectrometer coupled to a gas chromatograph.B是气...
The working principle of LPM movable high efficiency industrial lube oil purification unit is explained.LPM移动式高效工业润滑油净化装置的工作原理.The working principle of LPM movable efficiency industrial lube oil purification unit is expl...