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...
我把水开得很热，水汽模糊了镜面。I run the water very hot, clouding the mirror.整块玻璃仍然蒙着水汽。The glass is all steamed up still.她站在蒙着一层水汽的镜子前。She stood in front of the misted-up mirror....