Dry-type transformers require minimum maintenance and provide long years of trouble-free service.
干式变压器的最低要求，并提供免费维修服务多年的麻烦。
As a result dimensioning to the Max. Load in the fully extended position gives reasonable guide dimensions and trouble-free service.
因此，在全伸长下最大载荷的所给定的尺寸是合理的导向件尺寸并可保证免于维护。
Beijing, for instance, found itself in great traffic trouble when the city announced to provide free metro service for its citizens during the Asian Games in 1990.
比如，1990年北京亚运会期间，当该城市宣布为市民提供免费地铁服务后，就遇到了巨大的交通麻烦。
Performance of hydraulic oils is very dependent upon the quality of base oil to ensure good filtration, trouble free operation and a long service life. ?
基础油的质量对液压油的过滤性能、液压系统的平稳运行和液压油的长寿命使用有着重大影响。
Designed as rugged and highly effective devices, the PMH-H will provide years of trouble free service.
坚固耐用的高效设备，该产品的设计将提供的多年免费服务。
This means that products are expected to always work "out of the box" and to be reliable in general use and to give long, trouble free service.
这意味着产品总是“可拆盒即用”的、具备可靠的使用并可以提供长期、免费的服务。
This means that products are expected to always work "out of the box" and to be reliable in general use and to give long, trouble free service.
这意味着产品总是“可拆盒即用”的、具备可靠的使用并可以提供长期、免费的服务。
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