考察了膜性能的几个因素，外界条件对超滤器透水速度的影响。
The factors affecting the performance of membrane and permeation rate of ultrafilters were studied.
分别从外加粘结剂百分数、成型压力、骨料粒径、保温时间、烧成温度等因素对渗水砖的渗水速度和强度的影响进行了探讨。
The dependences of seepage velocity and bending strength on agglomerant content, forming pressure, particle diameter of the aggregate, soaking time, firing temperature and so on were discussed.
当对侧手向后推水，达到最快的划水速度和最大推进力的时候，移臂开始加速，驱动手掌前伸入水。
The arm recovery accelerates and the hand drives forward into the water while the opposite hand pushes back achieving maximum hand velocity and propulsion.
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