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.
大学四年，我在机械工程系学习，所学的专业是金属材料及热处理。
The university is four years, I studied in the department of mechanical engineering, specialities studied are metal material and heat treatment .
该系统可作为机械行业中工程技术人员选材及制定热处理工艺的参考，还可作为“材料及热理”学科的教学软件。
This "Expert System" can be used by engineers as reference software, or used by "Metal Material & Heat Treatment" teachers as teaching software.
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