To control the respiratory infection, some measures are taken such as ward negative pressure control, reasonable air distribution and high efficiency exhaust air filtration, obtaining better effects.

针对控制呼吸道传染病的要求，采用了房间负压控制、合理的气流分布、高效过滤排风等技术，取得了较好的效果。

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The particles in air were collected on the surface of the organic filtration, which was digested by microwave method under high pressure to prepare the sample solution.

用有机滤膜采集空气中颗粒物样品，用微波高压络合消解后制成样品溶液。

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The experiment for comparing the infiltration affected by entrapped air with free filtration was carried out. It is found that the effect of air pressure is not negligible.

通过自由入渗与恒定土壤空气压力入渗试验结果对比得出，研究入渗问题必须考虑禁锢土壤空气压力的影响作用。

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