We manufacture the tool joint, make the seal test and make-and-break test.

根据零件图试制双台肩钻具接头，对其进行上卸扣试验和水压密封测试。

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When you modify old code you have to both test your changes and then perform a set of regression tests to make sure you didn't break any of the existing code.

而当你修改旧有代码时，你不得不既要测试你更改的部分，还要进行一系列的兼容测试，以保证你没有破坏任何的旧有代码。

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You've been working hard on the initial setup, and when you get back from your well-earned break, you need to test to make sure you've done everything right.

您已经努力工作完成了初始安装，当您很好地休息之后，您需要进行测试以便确保您正确地进行了所有操作。

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