MO,mo

=Macau;; Mail order 郵購;; Maintenance and Operation 維護與操作;; maize oil 玉米油;; Manually Operated 人工[用手]操作;; Marine Observer 海洋觀察站;; mass observation 民意測驗;; Master of Obstetrics 產科碩士;; Master of Oratory 修辭學碩士;; master oscillator 主振蕩器;; Material Order 材料定單;; Megohm;; Meteorological Office 氣象局;; Method of Operation 操作方法;; Microwave Oven 微波爐;; mineral oil 礦物油;; Missouri;; Mode;; molecular orbit 分子軌道;; Molybdenum ;; moment;; Monday;; money order 匯票;; month;; monthly;; morse code 莫爾斯電碼;; motor operated 電動機傳動;; municipal office 市政廳