GEF ensures that a connection is only created once by first checking to see if it exists already in the viewer.

GEF确保只创建一次连接，该工作是通过首先检查查看器中是否已经存在连接来完成的。

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Checking the check box to Deploy JDBC Connection to Server will automatically create a data source in the extended information of your EAR file.

选择Deploy JDBC Connection to Server复选框，将会在您的EAR文件的扩展信息中，自动创建一个数据源。

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The paper suggests formula to ensure smooth connection of gear arc with form grinding of transition curve, also a checking method is used according to the condition of driving system.

对成形磨齿法中用圆弧作齿根过渡曲线，提出了确保光滑连接的计算公式，并依据传动条件进行验算的方法。

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