port pair短语²⁸⁴¹⁶ 基本例句 配流副 Oil film with a certain range of thickness and figure are the basic prerequisites of a good running condition for port pair in axial piston pump, and also is one of the primary lubrication indicators. 一定厚度与形状的油膜是轴向柱塞泵配流副保持良好工作状态的首要前提，也是衡量其润滑特性的主要指标之一。 dictall