边角料：在抛光研磨的操作中，从毛胚件上被去除的多余钢材。
RIB STOCK : Extra steel left on green product to be ground during the finish grind operation.
演示了抛光棒形固体激光器的运转；其输出能量比毛棒大，热稳定性比毛棒好。
A demonstration for operation of polished rod laser is given. The output energy is higher and the thermal stability is better than that of roughened rod laser.
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