常用 in common use 常用词语 everyday expressions; commonly used words; 常用药材 medicinal herbs most in use; 砾石常用来筑路。 gravel is much used for road-making. “queer” 这个词常用作 “mad” 的委婉语。“queer” is the word often used euphemistically for “mad”.; 常用词 everyday words; often-used words; common words; 常用电压 common voltage; 常用对数 common [ordinary] logarithm; denary logarithm; brigg's logarithm; 常用卡片 active card; 常用名词表 major terms; 常用实用单位 usual practical units; 常用示波器 macrooscillograph; 常用箱 service tank
An interpretation of misuse of common quantities and units 常用量和单位使用错误解析
This paper firstly introduces basic principle and each using condition of common water - measuring method , analyses main problems during the developing and researching about water - measuring meters and devices in irrigation district , put forward some ideas that combine the practice of irrigation district , choose suitable water - measuring facilities and advance economy development of irrigation district 本文首先介绍了我国常用量水方法的基本原理及其使用条件,分析了当前在灌区量水仪表、设施开发研制方面存在的问题,提出了结合灌区实际,开发新的量水设施仪器,以促进灌区经济的发展。