Problems of falling chip, tool tipping and big noise are happened during cutting off main bearing caps made of gray casting by using combination milling cutters.
采用组合铣刀切断灰口铸铁材质的汽车发动机主轴承盖时，出现工件掉渣、刀具崩刃、噪声大等问题。
Scribbled on the wall despite the red paint and mottled between constantly falling chip can still see the layers of sun-dried brick, adobe peeled off, write a red brick.
墙体尽管涂上了红色涂料，斑驳之处仍可见不断掉渣的层层土坯，土坯脱落处填上了红砖。
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