负速度
velocity───n.【物】速度
negative───adj.[数]负的；消极的；否定的；阴性的；vt.否定；拒绝；n.否定；负数；[摄]底片
velocity profile───速度剖面（图），速度分布图，速度变化图
muzzle velocity───初速；出口速度；初速度（弹出膛时的速度）
constant velocity───常速度，等速度; 恒速；匀速；等速度；恒速度
angular velocity───[力]角速度
negative effect───n.负面影响; 负效应；负面影响；负效应；负磁力效应
film negative───胶片；软片
negative attitude───[医]消极态度
The object starts out at t equals zero with a negative velocity.───物体从t=0时开始运动,其速度为负。
shallow-water having negative velocity gradient and rough interface are calculated using such results.───用其结果计算了具有粗糙界面的负声速梯度浅海中的简正波声场。
Strong radar echoes and positive-negative velocity and head wind area are indicative to the heavy rainfall event.───强雷达回波和正负速度对、逆风区等特征对强降水具有指示意义。
The longitudinal variation of the each region is also studied, which shows that the width of the negative velocity area and the circulation flow area changes linearly in the longitudinal direction.