velocity

• 名词，指物体在某一方向上的运动快慢，常用于物理学和工程学语境。

A noun referring to the speed of an object in a given direction, often used in physics and engineering contexts.

1. Speed in a given directionB2formalscientific

   The rate of change of an object's position with respect to time, including direction.

   速度（含方向）

   • The car's velocity was measured at 60 miles per hour north.
   • Velocity is a vector quantity, meaning it has both magnitude and direction.
   • The rocket achieved a velocity of 25,000 kilometers per hour.

2. Rate of changeC1formaltechnical

   The speed at which something happens or changes over time.

   变化速率

   • The velocity of the chemical reaction increased with temperature.
   • Economic velocity refers to the speed at which money circulates.
   • The velocity of data transmission has improved dramatically.

   同义词momentumpacequicknessrapidityratespeedswiftnesstempo