以下为句子列表：
英文: Air valve size and airflow resistance losses of valves always speed and the size of the spring-loaded edge.
中文: 气阀阻力损失大小与气流的阀隙速度及弹簧力大小有关。
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英文: Test method for airflow resistance of respiration of filtering particle respirator.
中文: 过滤式防微粒口罩对空气流呼吸阻力的试验方法.
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英文: The influence of pipeline flow resistance on net speed of vacuum pump is analyzed in long-distance pipeline vacuum drying, the calculation method of net speed of vacuum pump is given and checked up with site experiment.
中文: 摘要分析了长输管道真空干燥中真空泵组的有效抽速受管道流阻的影响，给出了有效抽速的计算方法，并用现场实验对其进行了验证。
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英文: These membranes feature high permeability and thereby low flow resistance during filtering and separation.
中文: 这种薄膜在过滤和分离过程中具高渗透性和极低的流量阻挡。
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