special surface短语¹⁴⁴⁹⁷²⁺² 基本例句 特殊曲面 The globe bearing of grinder is one of the important part for its great weigh support, special structure requirement and special surface machining which should be simple and practical. 球面瓦是磨机的重要机件之一，两只静止的球面瓦要支承着几百吨重的旋转筒体运动，故其结构有着特殊要求。 chemyq