【拼音】：jīnɡ cái 【注音】：ㄐㄧㄥ ㄘㄞˊ 【汉字】：精材
基于精对苯二甲酸(PTA)装置中钛材换热器的实际设计范例，论述了钛材的选用原则及钛材换热器的结构设计。
The selection principle of titanium and the structure design of titanium heat exchanger are expounded based on the actual design example of titanium heat exchanger in PTA unit.
高速线、棒材热轧生产线的预精轧段和精轧段用轧辊的工作条件十分恶劣。
Working condition of roller rings used in finishing roll sector or pre-finishing roll sector of high speed line or rod rolling mill production line is extremely vile.
通过选择不同规格精密的滤材，即可达到所要求的粗滤、精滤、微滤、除菌等不同的效果。
By choosing different specifications of precision filtration material, can achieve the requirement of precision filtration, rough filtration, micro filter, etc.
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