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- A ratio change by as little as0.1 part per million could signal an influx of carbon dioxide from magma either building under or rising up through the volcano. 比例的變化即使只有千萬(wàn)分之一，都可能是種警訊，表示有巖漿在火山內累積或逐漸上升，其中的二氧化碳逸出所致。
- Only three parts per million can kill sea urchin embryos, for example. 廢水處理不能完全清除其最常用的成分三氯生，而它對海洋生物有毒。
- Alloy steel heats are vacuum-treated on degassing units to reduce hydrogen contact to less than two parts per million and reduce metallic oxides. 合金鋼熱是在脫氣裝置下進(jìn)行真空處理，以將氫接觸減少到百萬(wàn)分之二以下，并減少金屬氧化物。
- The term parts per million(ppm) was widely used but frequently led to misinterpretation. 廣泛使用百分之幾（ppm）表示結果，但常常引起誤解。
- What are your lead numbers typically on this product? Do you offer a product with lead under 250 parts per million? 你們的典型產(chǎn)品的導數是什么?你們提供每百萬(wàn)250個(gè)配件用這個(gè)導數的產(chǎn)品嗎?
- Defect levels most often are measured as defects per million opportunities (DPMO), also called parts per million (PPM). 最常用來(lái)評估缺陷等級的物理量是百萬(wàn)機會(huì )缺陷數（DPMO），也稱(chēng)百萬(wàn)分率（PPM）。
- At one point during a six-day sunless period, CO2 reached a high of 3,800 parts per million (ppm). 有一次連續六天陰天，二氧化碳的含量高達3,800/百萬(wàn)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;應確保池水的氯含量不少于百萬(wàn)分之0.;5。
- 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，斯特恩預計：不使用CCS，要保持空氣比例穩定在550等份/百萬(wàn)，那么將增加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. 這些是嬰兒的每百萬(wàn)(百萬(wàn)分之一)30個(gè)部份衣服,衣服的75個(gè)百萬(wàn)分之一連絡(luò )那皮膚和300個(gè)百萬(wàn)分之一百萬(wàn)為其他的衣服或織物。
- 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. 它的亮度僅為光球的百萬(wàn)分之一，只有在日全食時(shí)或用特制的日冕儀才能看見(jiàn)。
- On this basis, the Secretary of Labor had set the permissible exposure level for workers at 1 ppm (part per million), which he considered the lowest feasible level. 根據這一點(diǎn)，勞動(dòng)部長(cháng)已把工人的允許接觸水平規定為百萬(wàn)外之一，他認為這是最低的可行性水平。
- Levels of the gas at the Zeppelin research station on Svalbard, northern Norway, last week peaked at over 397 parts per million (ppm), an increase of more than 2.5ppm on 2008. 挪威北部斯瓦爾巴群島上的齊柏林研究站上周記錄的二氧化碳氣體水平最高值超過(guò)397個(gè)百萬(wàn)分點(diǎn)，比2008年的水平增加了2.;5個(gè)百萬(wàn)分點(diǎn)。
- Calculate or convert: relative humidity, dewpoint / frostpoint, absolute humidity, water content, mixing ratio, vapor pressure, parts per million, wet bulb temperature. 計算或轉換：相對濕度，露點(diǎn)/ frostpoint ，絕對濕度，水含量，配比，蒸氣壓，百萬(wàn)分之一，濕球溫度。
- Data are presented as concentrations in part per million (ppm) or qualitatively as positive or negative, depending on results reported. 數據作為部分的濃度為每百萬(wàn)（百萬(wàn)分之一）或定性為積極或消極的，取決于報告的結果。
- Data are presented as concentrations in part per million (ppm), part per billion (ppb) or qualitatively as positive or negative, depending on results reported. 數據作為部分的濃度為每百萬(wàn)（百萬(wàn)分之一），每10億部分（濃度）或定性為積極或消極的，取決于報告的結果。
- The TLV-TWA for CO2, as listed by American Conference of Governmental Industrial Hygienists and by the Occupational Safety and Health Administration, is 5000 parts per million, or 0.5%.The CAS # for CO2 is 124-38-9. 正如美國政府工業(yè)衛生學(xué)者會(huì )議和職業(yè)安全和健康管理局所列出的，對于二氧化碳的TLV-TWA值是百萬(wàn)分之5000或0.;5%25。對于二氧化碳，cas %23是124-38-9。
- The TLV-TWA for CO 2 , as listed by American Conference of Governmental Industrial Hygienists and by the Occupational Safety and Health Administration, is 5000 parts per million, or 0.5%. 正如美國政府工業(yè)衛生學(xué)者會(huì )議和職業(yè)安全和健康管理局所列出的，對于二氧化碳的TLV-TWA值是百萬(wàn)分之5000或0.;5%25。
- The observed amount of X-rays from Chandra and the non-detection of gamma rays from the Compton data show that the antimatter fraction in the Bullet Cluster is less than three parts per million. 不過(guò)，錢(qián)德拉望遠鏡觀(guān)測到的X射線(xiàn)量和康普頓望遠鏡沒(méi)有探測到伽馬射線(xiàn)的數據說(shuō)明，反物質(zhì)在子彈星團中的比例不到百萬(wàn)分之三。
- fluoride levels of 0.2 parts per million 百萬(wàn)分之零點(diǎn)二的氟化物含量
