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- parts per trillion 兆分之
- part per trillion 兆分之一
- Salinity of 32 parts per thousand. 盐度32零件‰ 。
- In the sea water sampled the salinity is two parts per thousand. 在取样的海水中,盐度为千分之二。
- Oceanic salinity generally has a range from 34 to 37 parts per thousand. 海洋中海水的盐度通常为34‰－37‰。
- Only three parts per million can kill sea urchin embryos, for example. 废水处理不能完全清除其最常用的成分三氯生，而它对海洋生物有毒。
- Alloy steel heats are vacuum-treated on degassing units to reduce hydrogen contact to less than two parts per million and reduce metallic oxides. 合金钢热是在脱气装置下进行真空处理，以将氢接触减少到百万分之二以下，并减少金属氧化物。
- The term parts per million(ppm) was widely used but frequently led to misinterpretation. 广泛使用百分之几（ppm）表示结果，但常常引起误解。
- What are your lead numbers typically on this product? Do you offer a product with lead under 250 parts per million? 你们的典型产品的导数是什么?你们提供每百万250个配件用这个导数的产品吗?
- Defect levels most often are measured as defects per million opportunities (DPMO), also called parts per million (PPM). 最常用来评估缺陷等级的物理量是百万机会缺陷数（DPMO），也称百万分率（PPM）。
- Also at that time, 1958, chemical residues could only be measured in parts per thousand. 也是在那个时候，1958年，千分之一化学残留物才能被检测到。
- At one point during a six-day sunless period, CO2 reached a high of 3,800 parts per million (ppm). 有一次连续六天阴天，二氧化碳的含量高达3,800/百万PPM。
- For swimming pools using ozone for disinfection, ensure that the water should contain not less than 0.5 Parts per million of chlorine. 如泳池使用臭氧消毒;应确保池水的氯含量不少于百万分之0.;5。
- The average trend over 1980 to 1990 is about 13 ppbv year part per billion by volume year. 1980至1990的平均增长速度是每年13ppbv十亿份之一体积。
- Your ear can pick up sound waves from air pressure changes as small as one part per ten billion. 你的耳朵可以从空气气压的几百亿分之一的变化中提取出声波。
- Method: The main officinal composition and wet weight of overground parts per acreage of different accessions were determined periodically. 方法:田间采用拉丁方试验设计,定期取样测定主要药用成分含量及单位面积地上部分鲜重,收获时测定小区产量并进行方差分析。
- Furthermore, Stern estimates that to achieve stabilisation at 550 parts per million without CCS will increase costs by more than 60 per cent. 而且，斯特恩预计：不使用CCS，要保持空气比例稳定在550等份/百万，那么将增加60%25的成本。
- These are 30 parts per million (ppm) for infant garments, 75ppm for garments which contact the skin and 300ppm million for other garments or fabrics. 这些是婴儿的每百万(百万分之一)30个部份衣服,衣服的75个百万分之一连络那皮肤和300个百万分之一百万为其他的衣服或织物。
- The brightness of its light ball only parts per million, and only in the total solar eclipse or with a special instrument to see the corona. 它的亮度仅为光球的百万分之一，只有在日全食时或用特制的日冕仪才能看见。
- According to the state Department of Public Health, bromate levels should reach at least 200 parts per billion before adverse health effects are seen. 链接出处根据KNBC引用DPH的数据，bromate的含量至少要到200才会对人体有害。
