ppb

ppb什么意思,ppb翻译

基本解释

abbr.: (=parts per billion)十亿分之一
网络: 十亿分率；十亿分之几；十亿分之一浓度

英汉解释

• 十亿分之一

例句

• The presence of inclusions and developed prior particle boundaries (PPB) damage mechanical properties and service life of HIP disk.

  PPB（原始粉末颗粒边界）和夹杂物等缺陷对盘件的性能和使用寿命不利，必须予以消除。

• Objective: To assess the PPB rate and outcome and identify risk factors associated with PPB in patients taking clopidogrel.

  目的：评估服用氯吡格雷病人PPB的发生率，结果以及相关的危险因素。

• In original English language for the 1st impression. The Net Price to the Publisher is at the ratio 1. 6 of the PPB cost.

  原书第一次印刷的文字形式是英文。出版者支付的净价依据PPB成本1.6的比率计算。

• The Model 220 GF accessory is the latest technology in PPB level analyses by graphite furnace AA.

  型石墨炉配件采用PPB同阶段分析的最新的技术。

• Blood levels of toxaphene residues plateaued at 40 ppb, adipose levels at approximately 4000 ppb.

  血液中的毒杀芬残留量平稳在40浓度，脂肪含量约4000浓度。

• Food and water all contain lead. Currently, the EPA allows 15 ppb of lead in your drinking water.

  食品和水同样含铅，如今，美国环保署允许饮用水的含铅量是15PPB。

• Study on flow-injection spectrophotometric determination of ppb level silicate in boiler water and feedwater in thermal power plant

  基于流动注射分析技术快速测定电厂汽水中痕量硅酸盐的研究

• Research on Spectrophotometric Determination of ppb-level Chloride in Boiler Water at Power Plants Based on Flow injection Analysis

  流动注射-分光光度法测定电厂炉水中微量氯离子的试验研究

• Record readout in ppb after 60 seconds

  60秒后记秒后记录测定结果