对于一些有害气体，建议按海拔细分其接触限值。
For some harmful gases, it is suggested to classify their exposure limits based on altitude.
目的研究基准剂量（BMD）在制定镉生物接触限值中的应用。
Objective Based on two sets of data from occupational epidemiology, Benchmark dose( BMD) was applied to estimate biological exposure limit (BEL).
目的研究职业性苯暴露反-反式粘糠酸（t，t-MA）生物接触限值。
Objective To study the biological limit of urine trans, trans-muconic acid(t, t-MA)for occupational exposure to benzene.
但外操工在聚丙烯粉尘取样口取样瞬间工人操作位空气中丙烯最高浓度超过有关标准的职业接触限值11倍。
But the maximum concentration of propylene during the sampling moment at the polypropylene dust sampling window exceeded 11 times relative standards.
STEL是与PC- TWA相配套的一种短时间接触限值，必须符合制定的接触限值或推算出的接触限值。
PC - STEL is with the PC-TWA necessary one kind of short time contact limiting value, must conform to the contact limiting value which the formulation contact limiting value or calculates.
本文就所需要采取的措施．职业接触限值陈述了目前国际上的趋势，最后介绍了ILO／WHO全球消除矽肺的国际规划。
The present paper presents the action needed, occupational exposure limits for control silicosis, and finally introduces the ILO/WHO International Program on Global Elimination of Silicosis.
迄今为止，没有任何研究表明存在一致的证据，证明接触射频场强度低于造成组织发热的限值，会产生不良健康后果。
To date, research does not suggest any consistent evidence of adverse health effects from exposure to radiofrequency fields at levels below those that cause tissue heating.
不同国家的木粉尘的职业接触极限值（或极限值）却不尽相同。
The occupational exposure limits (OELs) of wood dust in different countries are however not the same.
工人每天接触不至于产生不良反应化学介质的空气浓度的极限值。
Limit Value Air concentration of chemical substances to which workers may be exposed to daily without adverse effect.
目的研究脉冲噪声作业工人语言听力损伤与噪声接触剂量之间关系，探索保护作业工人健康的噪声接触剂量限值。
Objective To study on the relationship between hearing impairment caused by pulse noise and the noise exposure level, and to explore the exposure limit to protect the worker's health.
研究职业接触苯乙烯的生物限值。
To study the biological limit values for occupational exposure to styrene.
研究职业接触苯乙烯的生物限值。
To study the biological limit values for occupational exposure to styrene.
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