闸板压力侧的流体压力使另一侧的阀座受较大的力，提高了密封性。
Fluid pressure on one side of the gate presses it against the opposite seat with great force and improves the seal.
液压系统选用插装阀集成控制系统，插装阀集成控制系统具有密封性好，通流能力大，压力损失小等特点。
Hydraulic systems use cartridge valve integrated control system, integrated cartridge valve control system has good sealing, flow capacity, small pressure loss characteristics etc.
这种在一定的温度和压力条件下使用的容器必须满足强度和密封性的要求，而焊接容器能充分满足这些要求。
The container used at specified temperature and pressure condition has to meet the requirements of intensity and airtightness, while weld container can completely meet these requirements.
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