Its application in practice shows that it works stably and reliably.
该装置在实际工程中的应用表明，其运行稳定可靠。
Practice shows that the temperature con trolling method is effective.
工程实践表明本文采用的温度控制方法是有效的。
The practice shows that in the presence of the appropriate authority it is not necessary to enforce a policy.
实践证明在有适当的机构存在的情况下，不必加强政策。
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