抱关击柝: (守关, 击木以警夜) guard the gate and strike the rattle -- petty officers; be doorkeepers or night watchmen; serve as gatekeeper and night watchman (喻地位低微的小吏)
Our country ca n ' t produce but import it . the task of this thesis is to design our own homemade facer machine . at the same time all the components and parts in the system accord with national criterion so as to depress the cost 目前国际上只有少数几个发达国家可生产这一系统，我国在这方面尚处于空白，只能依靠进口，本设计是理信机国产化的一部份，同时系统全部零部件采用国家柝准以降低成本。
