ton-mile

短语

n. 吨英里

词形变化

ton-miles 复数

别名

ton mile

释义与例句

n.
  1. 1.

    A unit of measure expressed in number of short tons moved over a specific distance in miles.

词源

Compound of ton + mile, although, as with any such unit of measure (e.g., person-months, newton metres), the mathematical relationship of multiplication is simultaneously involved: X tons transported a distance of Y miles = X × Y = Z ton-miles. Attested since the 19th century in railway logistical usage; greatly increased in use by the logistics boom of World War II and the continued postwar development of advanced logistics.

来源：wiktionary