[?] 1. ?(ton). [?? ?? ??? ??? ??? ‘t’? ?].

2. ?(ton). [??(英國)? ??(美國)?? ?? ?? ?? ??? ??]. [?? ?(long ton)? 2,240???? 1,016.1kg??, ?? ?(short ton)? 2,000???? 907.2kg?. ????? ?? ?? ‘英噸’??, ?? ?? ‘美噸’??? ?].

3. ?(ton). [?? ???? ??? ??? ?? ???? ???? ???, ??? ?? ??? ?? ??? ??? ???].