英语词汇part per trillion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	part per trillion
释义	part per trillion 简明释义万亿分之一：表示一个物质在另一个物质中的浓度，每一万亿份中只有一份。网络释义 1 ?万亿分之一 ... 万亿大卡 teracalorie 万亿分之几 parts per trillion; ppt 万亿分之一 part per trillion; ppt; trillonth ... 短语 1 ppt part per trillion 万亿分之双语例句 1 The concentration of nitrogen trifluoride in the atmosphere is about 0.5 part per trillion, making it very hard to measure. 大气中三氟化氮的浓度大约为0.5万亿分之一(ppt)，使得它很难测定。
随便看	falling velocity falling viscometer falling volt-ampere characteristic falling water fallingwater falling weather falling wedge falling weight falling weight deflectometer falling weight deflectometer,FWD falling weight impact strength falling weight impact test falling weight test falling weight test ferryboat operating rate ferry boat ferryboat ferry boat ferry-boat traffic ferryboat utilization rate ferry box package Ferrybridge ferry bridge ferry brige ferry bus

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。