求翻译：　　 当雷诺数超过某一数值时，流体不再保持分层流动，而可能向各个方向运动，有垂直于管轴方向的分速度，各流层将混淆起来，并有可能出现涡旋，这种流动状态叫紊流。紊流时的速度分布非常复杂，目前还不能完全利用理论推导求得，经实验方法得出紊流时圆管内流速分布曲线如图4所示。是什么意思？

Mid-stream physical point in the laminar flow state mutual doping, fluid movement layered In this fluid state, the viscosity plays a major role.

When Reynolds number exceeds a certain value, fluid flow is no longer maintained, and may be layered to the direction, perpendicular to the axis of the tube, the flow rate per layer will be confused, and a potential vortex, which state that turbulence. Turbulence is a very complex distribution of sp

When the Reynold's number surpasses some value, the fluid no longer maintains the lamination to be mobile, but possibly to each direction movement, has is vertical to the tubular axle direction velocity component, various flow layers will confuse, and will have the possibility to appear the vortex,

Physical fitness is not doping in laminar flow, fluid layered campaign, in which fluid, cohesive play a major role.

This is a turbulent zone;