ObjectiveTo improve the standard method for determining phosphoric acid in the air of workplace, so as to make it to be applied in practical work.
目的对目前工作场所空气中磷酸的标准测定方法进行改进，使之可以在实际工作中应用。
This article makes an exploration, combined with the work experience, of the method for determining the unit price of Labour, materials and machines of foreign projects.
此文结合工作实际，较全面地探讨了国外工程工料机单价的确定方法。
The calculation method of determining the optimum work and geometrical parameters of this pump are presented. The above theory is verified by experiments.
提出了确定该泵最优工作及几何参数的计算方法，通过试验对上述理论进行了验证。
Based on hereinbefore problems, this paper USES the method of criterion and demonstration research and determining the nature and quantifying research to complete hereinafter work.
基于以上问题，本文采用规范研究与实证研究相结合、定性研究和定量研究相结合的方法，主要完成以下工作。
The method is used commercially, especially for glasshouse crops, and also in experimental work in determining the effects of mineral deficiencies.
此法经常在商业中使用，尤其是针对一些温室作物，或者用于验证矿质元素的缺乏对植物产生的影响的实验。
The method is used commercially, especially for glasshouse crops, and also in experimental work in determining the effects of mineral deficiencies.
此法经常在商业中使用，尤其是针对一些温室作物，或者用于验证矿质元素的缺乏对植物产生的影响的实验。
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