However, in current library service field, a set of specific and systematic service policy and system that can provide regulation and basis to library services is yet to be set up.
然而，在当前的图书馆服务领域，还没有一套明确的、系统化的服务政策与制度，为图书馆的服务活动提供管理的规范和依据。
Test results show that the regulator operates well in the regulation of field current and the reversal of field current...
试验结果表明该调节器可以很好的调节励磁电流，并能可靠地实现励磁电流的反向。
Test results show that the regulator operates well in the regulation of field current and the reversal of field current...
试验结果表明该调节器可以很好的调节励磁电流，并能可靠地实现励磁电流的反向。
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