介绍了固定球球阀的密封原理和阀座密封力的计算，分析了加工误差对密封性能的影响，提出了改进意见。
Introducing the sealing principle of fixed ball valve and the calculation of seat sealing force, analyzing the effect of machining error upon sealing property and putting forward improving opinions.
分析了管程温差对标准管箱法兰密封性能的影响，并为标准管箱法兰的选用提供了理论依据。
The influence of standard channel flange sealed performance is analyzed in the case of subjected to channel side temperature difference.
基于流体动力学理论，推导了水电解槽密封泄漏率公式，并分析了其密封性能。
The sealing leakage ratio formula of water electric tank was deduced based on hydrodynamic theory and the sealing performance was analyzed.
通过改变刷毛直径、刷毛密度、刷毛与轴的间隙以及刷毛齿形，分析了这些结构参数对密封性能的影响规律。
By changing the brush diameter, density, the gap between brush bristles and the axis, and the shape of brush edge, the influence of the structure parameters on the seal performance is obtained.
通过分析研究和试验表明具有密封性能良好，结构紧凑省材，加工简单，维护拆装方便等优点。
With the analysis and the test, it was shown that this new seal structure has the advantages of good seal characteristics, compact structure, easy machining and maintenance.
通过实验研究了大间隙、高转速条件下磁性流体密封的规律，并对其进行了理论分析。另外还给出了改进大间隙条件下，提高密封性能的措施。
The magnetic fluid seals' rules at large gap and high speed conditions were studied and the theoretical explaining was given. A method to improve the tight capacity was given.
在试验基础上分析得到了此种垫片的密封性能曲线和相应的公式，研究结果对垫片选用和法兰密封设计具有重要参考价值。
Based on the experiment, we attained the sealing experimental curve and equation. These results are the important reference of this gasket for its choice and design of bolted flanged connection.
本文论述分析了波齿复合垫片的常温力学性能和密封性能试验研究。
The test results of mechanical and sealing performance at room temperature of flexible graphite gaskets reinforced by corrugated metal sheet are discussed and analyzed.
介绍了外端双扇摆门的原密封结构和改进后的密封结构，对比分析了硅橡胶条、尼龙毛刷和羊毛毛刷的密封性能。
The original seal structure and the improved seal structure of the double-leaf swing door at the outside end are described.
分析了离心水泵填料密封装置存在的缺陷，可通过改造成机械密封形式来提高密封性能，以达到提高泵的效率。
The text describes the limitation of centrifugal pump filling seal equipment. Change the filling seal into the machine seal to improve seal capability and to increase efficiency.
本文对波齿复合垫片的常温密封性能进行了试验分析研究。
The sealing performance at room temperature of flexible graphite gaskets reinforced by corrugated metal sheet are experimental investigated and analyzed.
分析了用酚酞试剂检测碱性电池密封性能产生错误结果的原因。
The causes of producing error results were analyzed at detecting alkaline cell seal characteristics, using phenolphthalein solution.
分析结果表明：在微孔半径一定时，对微孔操作参数进行优化，可使密封性能达到最佳。
Results show that optimum operating parameters maximize the sealing property as the radius of the micro-pores is constant.
分析结果表明：在微孔半径一定时，对微孔操作参数进行优化，可使密封性能达到最佳。
Results show that optimum operating parameters maximize the sealing property as the radius of the micro-pores is constant.
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