Fan case can be opened for internal maintenance.

可开启式风机外壳，便于维修。

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Often, they call in external consultants to build new applications based on new technology, but once the applications are deployed, they turn them over to internal maintenance staff for support.

通常来说，他们会外请顾问来根据新的技术建立新的程序，但是一旦这项程序开发部署完毕，他们会将该程序应用交付给内部维护人员支持。

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The tubes help protect the concrete from de-icing chemicals, potentially reducing maintenance costs, and no internal rebar is needed.

布套帮助保护混凝土不受溶雪剂侵蚀 可减少维护费用 并且不需要内部钢筋。

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According to the February 20, 2013 sworn deposition of the FAA inspector in charge of the cases against the mechanics and the airline, the inspector, Klaus Ploschnitznig, prepared a PowerPoint briefing on potential USAirways maintenance violations for an internal FAA management presentation January 20, 2010, shortly after the alleged violations were discovered.

FORBES: Documents Raise Questions Of FAA Impartiality In Airline Oversight

Among the services displaying at the expo are internal architects, landscape gardeners, experts in cemetery maintenance and craftsmen that specialize in the manufacture of bells.

CNN: May 25, 2012 -- Updated 0815 GMT (1615 HKT)