bearing part短语¹⁴⁴⁹⁷²⁺² 基本例句 定向部分 Besides, the result of actual life test for hinge shows that the roundness of bearing part affect the distribution of contact stress and it dominates the life of hinge obviously. 此外，铰鍊的实机寿命测试结果，显示此种机件真圆度的优劣比不同表面形貌之影响更为明显。140.118.33.11