多重密封设计，防止漏声；
Multiple sealing design and prevention of sound transmission;
一种新颖的密封铅酸电池充电器的设计与应用。
Design and application of a kind of new sealed lead-acid battery charger.
执行机构采用全密封防水设计防护等级高。
Actuator design with fully sealed waterproof high degree of protection.
防水性能：全密封性工艺设计，防水。
Waterproof performance: the whole sealing process design, waterproof.
对水下液压冲击铲的机械本体、密封结构、铲头形状、工具腔长度等进行了设计、分析。
Analyse and design mechanism, seal structure, shape of shovel head and length of tool chamber.
由此得出的结论可以为密封结构的优化设计提供参考。
The conclusion can provide references for optimal sealing structure design.
这为合理设计机械密封装置提供了理论依据。
It provides a theoretical basis for designing the mechanical seal ring equipment.
刀锋式闸板设计，关闭时由斜面施力于阀座，密封性好；
刀锋式闸板设计，关闭时由斜面施力于阀座，密封性好；
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