定义 中文名称： 难加工材料 英文名称： material of difficult machining 定义： 具有强度高、硬度高、导热性差、韧性或脆性大等特点的某些金属或非金属材料。 应用学科： 机械工程（一级学科）；机械工程(2)总论（二级学科） 以上
双语例句
1
The machining quality of the hole is difficult to control because of the interactional complexity between laser and material.
由于激光与材料相互作用的复杂性，使得小孔加工质量很难控制。
2
However, it is difficult to machine this material in conventional machining methods because of its high hardness and brittleness as well as inconductvity, thus restricting its application area.
但由于硬度高、 脆性大、大多数陶瓷材料不导电，传统的机械加工方法难以加工，使用范围受到限制。
3
The chip deformation of titanium alloys is typical shear localization from low cutting speed, which is general phenomenon in machiningofdifficult to cut material at high cutting speed.