The results show that the test error of sample A with large angle coefficient of hole bottom is under 5%, and will become smaller with the increase of furnace temperature;

结果表明，孔底角度系数较大的试样A的检测误差<5%，并且随着炉膛温度的提高，其检测精度也随之提高；

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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；

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A circular hole equals to the cylinder of the jointing component and gaps through which the nylon can fall down are reserved in the vicinity of the opposite Angle at the bottom of the flat triangle.

在平面三角底边对角的近处，预留下与连体构件的圆柱体相当的圆洞和尼龙丝可以落下的缝隙。

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