Study the biological limit of urine trans, trans-muconic acid for occupational exposure to benzene.
研究尿中反式，反粘康酸对苯职业接触的生物学极限。
The limit for occupational radiation exposure among workers who deal with radioactive material is 50 millisieverts.
对于职业的处理放射性物质的工人，接触辐射的极限是50毫西韦特。
Objective To study the biological limit of urine trans, trans-muconic acid(t, t-MA)for occupational exposure to benzene.
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。
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。
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).
目的研究基准剂量（BMD）在制定镉生物接触限值中的应用。
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