压差英文是differential pressure，表达式是△P=P1-P2，指体系内两点间的压强差。
Influence of aft cover plate construction on the hysteresis and the stiffness under the conditions of different pressure differential was analyzed by using the FEM (Finite Element Method) model in current work.
采用有限元接触模型分析了在不同压差条件下，三种后遮流板结构尺寸对指尖密封的迟滞特性和刚度的影响。
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应用工业气体安全关断，压力控制或压差控制系统应用。
Application Industrial gas system applications for safety shutoff, pressure control, or differential-pressure control.
采用杠杆执行器要求阀门的最大压差不能超过下表所列的极限。
Maximum pressure differential required for valves with lever actuators should not exceed the limits listed.
通过采用真空压差铸造工艺，结合铸造型壳的制造，成功制造出金属零件。
Some metallic parts are successfully fabricated using a vacuum pressure difference casting technology and a casting mould shell technology.
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