sillometer

航速表, 测速计

词形变化

sillometers 复数 sillometers

释义与例句

n.
  1. 1.

    A 19th-century device for measuring the speed of a ship without using a log-line.

    历史

词源

Borrowed from French siller (“to make way”) + -meter.

来源：wiktionary