With the C919, Comac will have to master the precise integration of thousands of parts, develop a reliable maintenance network and then persuade airlines to trust the largely untested jet.

对于C919，Comac将必须掌握成千上万零件精确的的整合，建立一个可靠的维修网络，然后说服各航空公司相信未经充分试验的飞机。

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Meanwhile, maintenance can be performed on the master node to analyze why it went down.

同时，可以对主节点进行维护，分析它为什么会宕机。

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How does the material type influence the material master maintenance?

物料类型如何影响到主物料的维护?。

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Many of the homes include master suites on the first floor to help owners avoid stairs, and landscaping, lawn maintenance and snow removal is usually included in the monthly maintenance fee.

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