The twined coil insert can make the fluids perform complicated three-dimensions mixed flow and induce the occurrence of turbulent flow ahead of time.
绕花丝内插物可使流体在流动方向上做复杂的三维混合流动，提前诱发湍流发生。
In order to improve the performance of shell-and-tube heat exchanger, a new kind of in-tube heat transfer enhancement technology of twined coil insert is presented.
为了提高管壳式换热器的性能，提出了一种新型管内强化传热技术———绕花丝内插物。
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