blast hole testing drill是什么意思

用法例句

The Cones of Tri-cone Bit Made from 20CrMnMo Steel;

用2OCrMnMo　制作矿用牙轮钻头的牙轮

On Cone Form Feature Recognition for Three-cone Bit;

三牙轮钻头牙轮形状特征识别技术研究

Technical requirements of the drying oven used in cone silver brush-plating process are discussed in the paper along with detailed analysis of the designs of heating system, oven body, transmission system and electrical system, etc.

论述了牙轮烘干炉应达到的技术要求,对牙轮烘干炉的加热系统设计、炉体设计、传动系统设计、电气系统设计进行了详细分析。

Application of NN in auger gyre control;

神经网络在牙轮钻回转控制中的应用

This paper analyses the main factors that influence the speed of drilling hole,puts forward the methods to settle the main working parameters of the rotary drill.

分析了影响牙轮钻机钻孔速度的主要因素,提出了钻机主要工作参数的确定方法。

Dynamic model of roller bit with nine degrees of freedom;

九自由度牙轮钻头动力学模型研究

Computer simulation for the side-cutting of roller bits;

牙轮钻头侧向切削的计算机仿真

Model to determine rock drillability by roller bit;

牙轮钻头可钻性级值的确定方法

The calculation of contact stress of rock bit floating ring journal bearing under disalignment;

不对正情况下牙轮钻头浮动套轴承接触应力计算

Application of computer simulating technology in rock bit floating-ring journal bearings;

仿真技术在牙轮钻头浮动套轴承设计中的应用

The coupling function analysis of the thread-locking ring of rock bit on axial load;

轴向载荷对牙轮钻头螺纹锁紧环联接性能影响的分析

Effect of forging defect of 20CrNiMo cone and jaw to mechanical properties;

20CrNiMo牙轮牙爪锻造缺陷对力学性能的影响