ppm
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abbr. 百万分率，百万分之…（parts per milpon）
abbr.
part per million 百万分之…；
英英释义
PPM
PPM is an initialism that can refer to any of the following in this list:
以上来源于:Wikipedia
权威例句
70 000 PPM-sparare flyttas till statliga SåfanImplementing the PPM data compression scheme
Unbounded length contexts for PPM
Pensionsmyndigheten slänger ut PPM-jätten
A 2-V 23-μA 5.3-ppm/°C curvature-compensated CMOS bandgap voltage reference
The inflammatory effects of 2 ppm NO2 on the airways of healthy subjects.
A 2-V 23-/spl mu/A 5.3-ppm//spl deg/C curvature-compensated CMOS bandgap voltage reference
Performance evaluation of TH-PPM UWB systems in the presence of multiuser interference
Role of accurate mass measurement (+/- 10 ppm) in protein identification strategies employing MS or MS/MS and database searching.
Parametric drive of a toroidal MEMS rate integrating gyroscope demonstrating < 20 PPM scale factor stability
ppm
abbreviation of parts per million, attested by 1913.
1. These decrements in intellectual behavior were found in firemen exposed to carbon monoxide at 100 ppm for varying periods of time.
在不定期地暴露于100ppm浓度的一氧化碳的瓦斯检验员中，发现了这种智力行为的衰退。
-- 来源 -- 英汉 - 辞典例句
2. 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。
-- 来源 -- 英汉 - 辞典例句
3. An Inhalation Lclo (Mouse) of 9600 ppm for four hours has been determined.
四小时吸入Lclo (鼠) 为9600 ppm已经被确定。
-- 来源 -- 英汉 - 翻译样例 - 产品
4. It has a repulsive acidic odor that can usually be detected at or below a concentration of 5 ppm.
它有一种另人厌恶的酸味，在浓度为5 ppm或以下可以察觉到。
-- 来源 -- 英汉 - 翻译样例 - 产品
5. This is based upon actual measurements which indicate that exposure of up to 30,000 ppm x min did not cause any negative health effects in laboratory animals, while anemia did occur at exposures of 120,000 ppm x min.
这是基于实际测量的。该测量显示，大到30,000 ppm x min的暴露不会在实验室动物身上导致对健康的负面影响，而当暴露达到120,000 ppm x min时确实发生了贫血。
-- 来源 -- 英汉 - 翻译样例 - 产品
6. Concentrations of 10 ppm can be endured for only a few minutes and cause profuse lacrimation in all people.
10ppm的浓度，只需几分钟，就会使所有的人流泪不止。
-- 来源 -- 英汉 - 辞典例句
7. Carbon dioxide is a minor but important constituent of the atmosphere, averaging about 0.03% or 300 ppm by volume.
二氧化碳是空气的含量较小但很重要的组成成分，体积比平均约为0.03%或300 ppm。
-- 来源 -- 英汉 - 翻译样例 - 产品
8. The National Academy of Sciences-National Research Council, Committee of Toxicology, has recommended an Emergency Exposure Limit (EEL) for NF3 of 22,500 ppm.
国家科学院—国家研究理事会毒物学委员会已经推荐的NF3紧急暴露极限(EEL)为22,500 ppm。
-- 来源 -- 英汉 - 翻译样例 - 产品
9. Any combination of time of exposure and concentration that is less than the recommended level of 22,500 ppm x min is acceptable. Table 2 illustrates acceptable exposure times for varying concentrations of NF3 in air at the EEL of 22,500 ppm x min.
任何小于22,500 ppm x min的推荐水平的暴露时间和浓度的组合都是可以接受的。表2说明了在22,500 ppm x min的EEL下，对于空气中不同的NF3浓度可以接受的暴露时间。
-- 来源 -- 英汉 - 翻译样例 - 产品
10. Daily inhalation of 45 to 100 ppm for several hours has been associated with symptoms of irrifability, anorexia, headache, giddness, and emotional instability.
每天吸收45至100ppm几小时，会引起各种症状，如刺激性食欲不振，头疼，眩晕和情绪不稳定等。
-- 来源 -- 英汉 - 辞典例句
ppm
