- Fall velocities are usually measured by observing individual grains settling in a column of still fluid.
沉速通常是由观测单个颗粒在圆柱筒内静止的液体中沉降来测定的。
- The low quiescent drain current of the device insures good regulation when this method is used.
当这个方法被使用时，设备的低的静止的排水管电流保险好规则。
