请输入您要查询的英文单词：
单词
ppb
释义
ppb
in American English
parts per billion
Examples of 'ppb' in a sentence
ppb
Concentrations of methane have risen from 700 parts per billion (ppb) to 1,745 ppb.
Times, Sunday Times
(
2009
)
Laboratory analysis is done on samples that are 100 ppb and below using atomic absorption spectrophotometry.
The Scientist
(
2000
)
随便看
dronishness
dronklap
dronkverdriet
drony
droob
droog
drook
drookit
drool
droolworthy
drooly
droop
droopily
droopiness
drooping
droopingly
droopy
drop
drop a bombshell
not even
not everyone has the time to cook
noteworthily
noteworthiness
noteworthy
not exactly
英语词典包含298861条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间：2024/11/13 16:23:53