他开了辆敞篷车，载我和我的朋友辛西娅去看电影。He took me and my friend Cynthia to the movies in an open-topped car.辛西娅的皮肤和头发都是浅黑色的, 身材丰满, 但并不过分.Cynthia was brunette, her figure full, though not excessively.辛西娅的个性更加坚强、开朗.Cynthia's personal...
频率计不好用了, 需要更换.The frequency meter is not in effectiveness, to be renewed.数字频率计是一种基本的测量仪器.Measurement of time - frequency electronic measurement is an important area.介绍了数字频率计设计的基本原理.This paper has introduced the basic pri...
本文报道2, 4-二氨基 -6- 取代哌哗嗪基喹唑啉衍生物的合成及其抗疟活性.A series of 2, 4 - diamino - 6 - substituted piperazine quinazolines was synthesized.本公司主要经营各种硫化染料,硫化染料, 2.4-二氨基甲苯等等.Our company mainly engaged in all kinds of Sulfur Dyes Sulfur Dy...