The paper mainly described the application of Pattern Recognition to inspect the assembling direction of piston.
介绍了应用数字图像处理与识别技术检测活塞装配的质量问题。
As the piston travels in one direction, through a one way valve, it draws in the refrigerant gas from the low pressure side of the circuit.
活塞向一个方向移动时，环路中低压端的气态制冷剂通过一个单向阀，循环中低压端的气态制冷剂被吸入进来。
The priming mechanism (35) for the priming stroke is movable relative to the piston rod (11, 12) in the direction of propulsion (V).
为了预注行程，预注机构（35）相对于活塞杆（11， 12）在驱前的方向（V）上可以移动。
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