英语词汇focal line怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	focal line
释义	focal line 简明释义焦线网络释义 1 ?焦线 ... anterior focal lines 释义：前焦线 focal lines 释义：焦线 focal line,posterior 释义：后焦线 ... 短语 1 anterior focal lines 前焦线 2 radial focal lines 径向焦线 3 tangential focal lines 正切焦线双语例句 1 A system of fine lines dots cross hairs or wires in the focal plane of the eyepiece of an optical instrument. 光学仪器的目镜上的细线、圆点、十字型细线或金属丝组成的系统。
随便看	concentration of ions concentration of landholding concentration of mining concentration of offer concentration of oil concentration of output concentration of ownership concentration of phosphate and kalium concentration of poisons concentration of population concentration of power concentration of power concentration of production concentration of profile concentration of rail stresses concentration of river network concentration of solution concentration of spirits concentration of stacking faults concentration of stress concentration of stress concentration of substrate concentration of sugar in blood concentration of sulfuric acid concentration of the mind

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。