Running-in instruction

[grinding in]

The newly assembled machine, after a certain period of operation, the machining marks on the friction surface are polished and become more consistent.

Word decomposition

Explanation of grinding: grinding friction: sharpening the knife. Grinding ink. Hone. Grinding (friction grinding, metaphor grinding) running-in grinding. Grinding lacquer painting. Obstacles: tribulation. A lot of things have happened. Wear: Wear. Wear and erase. Procrastinate, waste time: grind, tangle. Work hard. The explanation of grinding is to close your eyes Hug. A perfect match. Appearance is close to spirit. Gathering: resultant force. Co-organized. Joint venture. Not violating, one thing corresponds to or conforms to another: qualified. Legal. Love each other. It should be: it should be. Together. "Articles are combined with the times, and poetry is combined with the times."