ppb

美 　英

• abbr.(=parts per billion)十億分之一
• 網(wǎng)絡十億分率；十億分之幾；十億分之一濃度

英漢解釋

abbr.

1. (=parts per billion)十億分之一

英英解釋

abbr.

1. (=parts per billion)

例句

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

PPB（原始粉末顆粒邊界）和夾雜物等缺陷對盤件的性能和使用壽命不利，必須予以消除。

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

目的：評估服用氯吡格雷病人PPB的發(fā)生率，結果以及相關的危險因素。

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

原書第一次印刷的文字形式是英文。出版者支付的凈價依據(jù)PPB成本1.6的比率計算。

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

型石墨爐配件采用PPB同階段分析的最新的技術。

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

血液中的毒殺芬殘留量平穩(wěn)在40濃度，脂肪含量約4000濃度。

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

食品和水同樣含鉛，如今，美國環(huán)保署允許飲用水的含鉛量是15PPB。

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

基于流動注射分析技術快速測定電廠汽水中痕量硅酸鹽的研究

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

流動注射-分光光度法測定電廠爐水中微量氯離子的試驗研究

Record readout in ppb after 60 seconds

60秒后記秒后記錄測定結果