The portlet class in both portlets ACTS as a controller that delegates all servicing work to a facade.
这两个portlet中的portlet类作为控制器，它将所有服务工作委派给一个外观。
Early prevent measure of modern technology to bearing is introduced, to find in time and do servicing work well.
简要介绍了现代技术对轴承早期预防措施，以便早发现早预防，有针对性搞好检修工作。
To a certain extent, ensured the security and efficiency of electric locomotive in the course of servicing work.
在一定程度上确保了电力机车整备作业过程中的安全性和高效性。
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