vertical velocity gradient 垂直速度梯度
myocardial velocity gradient 心肌运动速度阶差
transverse velocity gradient 横向速度梯度
horizontal velocity gradient 水平速度梯度
iso-velocity gradient nozzle 等速梯形喷嘴
normal velocity gradient 上的垂直速度梯度
The results show that a large velocity gradient emerges in the intermeshing region of the screw reactors, which is helpful to mix materials sufficiently.
结果表明，螺杆反应器的啮合区具有较大的速度梯度，有利于物料的充分混合。
Thus the difficulties of discontinuous velocity gradient and the stress singularity at the exit point are avoided, and the expense of computation is reduced.
这样回避了速度梯度间断的困难，缓和了出口处应力奇性引起的矛盾，同时又减少了计算量。
Theoretical and experimental results show that this method can eliminate the Doppler ambiguity spectra produced by transit-time effect, turbulence and velocity gradient in sample volume.
理论与实验研究结果表明该方法可消除渡越时间效应、湍流和采样单元内流速梯度造成的频谱模糊。
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