针对异型材的几种常用加工方法，如拉伸、辊拉、轧制等，分析它们在加工中的应力特点。
The stress characteristic of the main working methods for processing the special-shaped wire, such as drawing, driven roller die and rolling was analyzed.
铸制或轧制玻璃板、片或型材及异型材，不论是否有吸收、反射或非反射层，但未经其他加工。
Cast glass and rolled glass, in sheets or pro - files, whether or not having an absorbent, reflecting or non-reflecting layer, but not otherwise worked.
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