Also, the test in Line 13 will fail to detect an error because the result of the call will not be an empty string.
第13行中的检查也无法探测到错误，因为调用的结果不是空字符串。
If your support personnel have to go to multiple consoles to manage a process or detect an error condition, the instances of human error increase.
如果您的支持人员需要通过多个控制台来管理一个流程或检测一个错误条件，人为错误实例将会增多。
Thus, it is possible to rapidly and accurately detect an error of the linear motion device.
由此，能够尽早并且以高精度对直动装置的异常进行检测。
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