设备在出厂前均根据客户需求，经过最佳优化设计、生产制造、72小时运转测试，保证满足不同客户的品质与特殊要求。
Prior to ex-works, equipment is subject to optimal design and production, as well as 72-hour running test as required by the customers, which can meet the special requirements of different customers.
你应该每月使用测试按钮，看看闹钟和电池是否还在运转。
You should use the test button each month to see if the alarm and batteries are still working.
下一小节将描述一个运转良好的模型，在您构造测试层级的同时也伴随着避免常见缺陷的警报。
The sections that follow describe a model that works well, along with alerts about common pitfalls to avoid as you structure the test hierarchy.
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