Mecom
abbr. marine engine condition monitor(ing) 船舶发动机状况监视
🗣️ 情景例句
Well, hi, fellas.
你们大家好。
What time's the next train to Washington?
下一趟去华盛顿的车几点开？
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。