Commercial experiment had better results than that of bench test. Soft sponge back-lining carpet with symmetrical bubble hole density and high elasticity carpet was produced.
工业实验结果比小试结果更佳，制得了泡孔密度均匀、柔软、弹性好的海绵背衬地毯。
The paper introduced the successful application of high bench caving method of using deep hole roller rock bit into the practice of solving the complex goaf area, a stuff problem of this kind.
采用深孔牙轮钻机、利用高台阶崩落法成功地处理了复合采空区，解决了复合采空区处理难的问题，使技术人员在熟练浅采、深采空区处理的情况下，又探索出复合采空区的处理方法。
The bench test of three-cone bits and analysis of their bottom hole patterns are the simplest and useful means of checking and improving their design.
三牙轮钻头地面台架试验与井底模式的分析是对牙轮钻头设计的合理性进行检验与改进的最简便又较真实的方法。
Three dimensional finite element computing model is established and the effect of stemming length to deep hole bench blasting is studied by three dimensional finite element method.
采用三维有限元数值分析法，通过建立三维有限元计算模型，分析堵塞长度对堵塞区有效应力场的影响。
Simulation on effect of stemming length to deep hole bench blasting;
大块率是评价露天矿台阶深孔爆破质量的重要指标之一。
JWT type welding type hydraulic valve testing bench, to both sides of the host frame seal disc and welding the inner hole of the valve for positioning and welding groove of the valve is sealed.
JWT型焊接式液压阀门测试台，以两边主机架上的密封盘和焊接阀门内孔为定位，焊接阀门坡口为密封。
JWT type welding type hydraulic valve testing bench, to both sides of the host frame seal disc and welding the inner hole of the valve for positioning and welding groove of the valve is sealed.
JWT型焊接式液压阀门测试台，以两边主机架上的密封盘和焊接阀门内孔为定位，焊接阀门坡口为密封。
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