首页 >  Term: knot
knot

A unit of speed: 1 nautical mile (1.8520 km; 1.1508 mi) per hour. Originally speed was measured by paying out a line from the stern of a moving boat. The line had a knot every 47 feet 3 inches (14.40 m), and the number of knots passed out in 30 seconds gave the speed through the water in nautical miles per hour.

0 0

创建者

  • sbarton
  •  (Silver) 729 分数
  • 100% positive feedback
© 2024 CSOFT International, Ltd.