It is the goal for this writing to improve the maintenance cost control for domestic aviation through the experiences from the advanced outside airlines 借他山之玉，为我国航空业的维修成本控制做出一些贡献，是本文研究和写作的目的。
2.
Here provides by an experienced lawyer with any valuable and worthy to be shared comments and opinions from himself or others 一名从业多业的执业律师，对社会生活有许多认识。无论自我认知，还是他山之玉，只要是有共享价值的，总愿意陈列于此。
