Other instances in which this pattern is useful include logging and printing, such as when you want only one instance of a class to access and control one particular printer at a time.

在其他实例中，此模式也是有用的，包括登录和打印，例如，当您想要一个能够每次访问并控制一个特别打印机的类实例。

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Pattern authors can exercise varying degrees of control over deployment by choosing to lock deployment time parameters, ensuring fixed values for every deployment.

模式作者可以尝试对部署进行不同程度的控制，选择锁定部署时间参数，确保为每种部署使用固定的值。

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In our country, coexistence of various forms of the management control will be the basic feature of management control system pattern in a long period of time.

各种形式的管理控制并存是我国未来较长时期管理控制系统模式的基本特征。

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