Accurate determination of the gas phase density is very important for the reliability of adsorption measurements in both volumetric and gravimetric methods.
无论采用容积法还是重量法测量吸附平衡，准确计算气相氢密度对于实验结果的可靠性是至关重要的。
At present, determining methods of the cell concentration in fermentation liquid contain gravimetric method and plate counting method.
目前，测定发酵液菌体浓度的方法有重量法、平板计数法。
Gravimetric method ever used by environment detection station could not analyze the oil contents completely because of limited methods.
生产安全部环境监测站曾采用重量法测量，但由于方法的局限，不能全面分析水质中油的各组份含量。
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