近年来，甲烷蒸汽转化催化剂异形化研究取得了很大进展，其主要目的是提高催化剂的效率因子，降低固定床反应器中的压降。
In recent years, the irregular shape methane steam reforming catalyst development progresses rapidly with the goal to increase catalyst effectiveness and reduce the pressure drop in fixed bed reactor.
聚烯烃粒料槽车是目前国际上应用较为普遍的一种聚烯烃粒料散装化运输设备，其尾部的卸料口系在标准圆封上的异形大开孔。
Mobile tank is a popular delivery equipment for bulk polyolefine grain product nowadays. The outlet on the back of tank is a large abnormal opening on elliptical head.
盘式制动器的零部件比较多，但由于部分零件为异形不规则结构，并且需要定义的尺寸参数过多，不便于进行参数化设计。
The brake system has many parts, but some of them are irregular structure, and need to define too many size parameters, are not easy to make parametric design.
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