In production actual,as a result of the geological condition complexity,the tunnel passes through the coal bed and the geological crushed zone as necessary,the research holds the coal to go against supports and protects the technology with the control loose rock layer,guaranteed constructor's safety,the tunnel project quality,the project construction speed has the necessity very much,the Xinzhuang coal mine uncovers the coal in 3_2 seam leather belt inside slope Shimen to support and protect in advance usin...
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However, it is guaranteed to be loaded and to have its fields initialized and its static constructor called before the class is referenced for the first time in your program.
然而，类别却能保证一定会载入，并会在您的程序第一次参考此类别前，先让其中的栏位初始化，而其中的静态建构函式也受到呼叫。
Note that demands should never be made in a class constructor because class constructor code is not guaranteed to execute at any particular point or in any particular context.
请注意需求不应该设定于类别建构函式内，因为无法确定类别建构函式程序码的执行时点和内容。
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