The basic properties of the importance measure of the basic variable effect on the failure probability are discussed in this paper. Since the saddlepoint based line sampling method is independent of the distribution types of the random variables, and has the advantages of high accuracy and efficiency, this method is employed to estimate the defined importance measure.

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Electrical discharge machining as a nontraditional machining method can machining any kind of electrical conductive material by pulsed discharge process which erodes electrode materials. Because of its processing quality independence of part shape and material mechanical properties such as hardness, strength and toughness, EDM becomes one kind of basilic machining means and is playing an important role in the field of modern manufacturing, especially in mould manufacturing industry.

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The result of the system application to heat-supply network shows that method using in data and command string transfer has more...

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This directive specifies the DN that is not subject to access control or administrative limit restrictions for operations on this database.

本指令指定的 DN 對(duì)本數(shù)據(jù)庫(kù)的操作不受訪問(wèn)控制或管理權(quán)限的限制91精品久久久久久久无码。

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Some DDL operations require share DDL locks for a resource to prevent destructive interference with conflicting DDL operations, but allow data concurrency for similar DDL operations.

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