Objective To estimate onsite dust allowable concentration in railway tunneling.
目的估算铁路隧道现场粉尘容许浓度。
Objective To study the effect of low concentration CO on neurobehaviour function and the maximal allowable concentration(MAC) in limited time.
目的研究低浓度一氧化碳（ CO）的神经行为毒理学效应及限时最大容许浓度（ M A C） 。
The cost for the deposition of the waste depends also upon the volume of the storage cavities and the maximum allowable radioactive concentration of the waste.
废料处理费用还取决于贮存空穴的容积和允许的废料最大放射性浓度。
Influence of electrolyte concentration on water adsorption capacity and allowable water permeability of membrane are described, as well as influence of impurities in brine on properties of membrane.
叙述了电解液浓度等对膜的水吸附性和允许透过水量的影响情形，及盐水中的杂质对膜性能的影响状况，为稳定发挥膜性能对操作条件作相应的调适。
Results Total standard deviation of every solution was less than 5% of the concentration or detection limit. The confident limit of total average rate of recovery in sample kept in range of allowable.
结果各种溶液测定的总标准差小于其浓度的5 %或检出限，总平均回收率可信限在允许范围内。
The results showed that the toxicity of the treated wastes was greatly reduced, and the concentration of Arsenic ion and Chromium ion in the leachate reached the allowable level.
经稳定化处理后的废渣毒性大有降低，溶出液中砷、铬含量在容许范围。
The results showed that the toxicity of the treated wastes was greatly reduced, and the concentration of Arsenic ion and Chromium ion in the leachate reached the allowable level.
经稳定化处理后的废渣毒性大有降低，溶出液中砷、铬含量在容许范围。
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