The ceramic layer does not crack or flake off when heated to 800℃ and then quenched.
将陶瓷内衬复合钢管加热至800℃温,然后水淬,陶瓷层不炸不裂.
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让乒协犯难的,倒是北京奥运会的功勋教练施之皓如何安排.
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牛顿力学,因为牛顿力学,在这种很小的尺度下不适用,我们说过,牛顿力学。
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John permits nothing to trouble his mind , does and all the time lives like a fighting-cock.
约翰什么事情都不操心, 爱做什么就做什么,一直过着养尊处优的日子.
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If the family unit is still intact, the patient frequently does very well.
如果家庭仍然完整,病人常常恢复得很好。
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