以磨料磨损原理为指导，结合古今实例，讨论锋利刀片之锋利性、耐磨性、利磨性和自磨锐等问题的实质，给出明确定义，澄清一些模糊概念。
Based on abrasive wear theory and combined recent and ancient samples, the essential of the sharpness, wear resistance, sharpened-ability and self-sharpening performance of cutter were discussed.
数据库系统中的一致性概念和预测锁定(请参阅参考资料)对并发环境中的一致性问题给出了明确定义。
The notations of consistency and predicate locks in a database system (see Resources) gives a precise definition of consistency in such a concurrent environment.
不过英国财政部、英国央行以及英国债务管理局(Debt Management Office)尚未给出将涵盖的所有借贷种类的明确定义。
But the Treasury, the Bank of England and the U.K. 's Debt Management Office haven't precisely defined all the types of lending it will cover.
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