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 can the maintenance of soft film smallpox live longer, although this material of soft film smallpox was known as the "Master materials", has been widely praised and praised.

怎样保养软膜天花才能寿命更长，虽说软膜天花这种材料被人们称为“达人材料”，得到了广泛的称赞与好评。

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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.

WSJ: Luxury Retirement Living: A New Senior Moment