The production progress is operated by PLC system, the principal machine transmission use CAM to distribute time structure.

生产过程应用plc编程自动控制，主机传动采用凸轮分配时间机构。

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The author did a number of tests of the control system and the software run by the principal machine in many ways, analyzed the results of the tests, and gave the direction for improvement.

对下位机子站控制系统和运行于上位机的系统控制软件进行了多方面的测试，并分析测试结果，提出了改进的方向。

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If the key is not generated for the Informix server principal or when the server key is stored in an incorrect location in the IDS server machine, the gss_acquire_cred fails.

如果没有为Informix服务器主体生成密匙，或服务器密匙存储在IDS服务器机器中的错误位置，就会导致gss_acquire_cred失败。

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The principal competitor machine made by Life Technologies has temperature uniformity to within 0.5 degrees Celsius.

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