operation characteristic短语¹⁴⁴⁹⁷²⁺² 基本例句 操作特征 The design for operation characteristic mold of the centrifugal casting machine is to design the relevant craft course, choose the technics projects and technique requirements. 对开式离心铸造机模具设计是设计出相关的工艺过程，选择、确定工艺方案和技术要求。 dictall