由于邮件中心(收发室)的员工可以看到每一封邮件和其他重要的信息，他们通常比其他人更了解行情。
Because mailroom staff saw every piece of mail and other important information they often knew what was happening better than anyone else.
目的了解云南省碘缺乏病实验室质量控制（质控）网络及其运行情况。
Objective To evaluate Yunnan iodine deficiency disorders (IDD) laboratory quality control network and it' s running situation.
实验室测试结果和实际运行情况充分证实了系统的高性能、稳定性与可靠性。
Its high performance, stability and reliability are proved both in lab testing and in practical operation.
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