The calculated results of excitation and rotation temperature consistently illustrate the plasma jet is non-thermal in nature.
射流的激发温度和转动温度结果显示，这是一种冷的等离子体射流。
Introduce the basic principles, equipments, techniques and spot experimental conditions of expanded hole of technology of rotation jet.
介绍了旋转射流扩孔技术的基本原理、设备、工艺以及现场的试验情况。
When the inclination angle of a side nozzle is 0, 30,45 and 60 degrees, the eddying flow of the bottom hole vortex device will cause rotation at the bottom hole, affecting on the jet from bit nozzles.
侧喷嘴倾斜角度在0度、30度、45度和60度情况下，由于井底涡旋器的旋流作用，导致井底产生旋转，对钻头喷嘴射流产生了影响，以致在45度时出现压力损失最小的情况；
The cycle frequency of jet fluid swing is half of that of tangential circle rotation.
相应切圆呈周期性旋转，射流摆动也具有周期性，该周期是切圆旋转周期的一半。
The cycle frequency of jet fluid swing is half of that of tangential circle rotation.
相应切圆呈周期性旋转，射流摆动也具有周期性，该周期是切圆旋转周期的一半。
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