主要内容包括：机械工程材料与热处理、铸造、塑性成型和焊接四大部分的基础知识，涉及工程材料及其材料加工工艺的各个方面。

Its mostly content includes the mechanical engineering material and heat treatment, casting, plasticity shaping and welding. Dealing with engineering materials and its processing technical.

youdao

主要内容包括：机械工程材料与热处理、铸造、塑性成型和焊接四大部分的基础知识，涉及工程材料及其材料加工工艺的各个方面。

Its mostly content includes the mechanical engineering material and heat treatment, casting, plasticity shaping and welding. Dealing with engineering materials and its processing technical.

youdao