根据套损实际情况，导向杆下端部可以加工成椭圆形、平面式或笔尖形状，可以堆焊合金或不焊合金。
Based on the actual situation, guide rods can be processed into the bottom of the department of oval, planar, or tip shape, you can not weld surfacing or alloy.
细菌是这样小，一种普通类型的圆形细菌直径大约只有1/25，000英寸。 这种细菌放大一千倍看起来也只有铅笔尖那么大。
Bacteria are sosmall that a single round one of acommon type is about1/25,000 of an in ch across when thesebacteria aremagnified 1,000 times, they look only aslarge as apencilpoint.
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