辊棒属脆性材料，清理时应避免敲击、撞击、冲击以及其它易产生机械性应力的方法。
The roller is part of brittle material, avoid to use the way in whack, bump, impact and other easily to make mechanical stress.
硬质合金铰刀的高效性在机械加工中已得到广泛认同，但由于硬质合金材料本身的脆性，使其不适合用于断续切削。
Everybody knows the high efficiency of the carbide reamer, but the carbide blade is very brittle and not suit to interrupt cutting.
硬质合金铰刀的高效性在机械加工中已得到广泛认同，但由于硬质合金材料本身的脆性，使其不适合用于断续切削。
Everybody knows the high efficiency of the carbide reamer, but the carbide blade is very brittle and not suit to interrupt cutting.
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