State space model and performance analysis of numerical control machine rotary feed system;
数控机床旋转进给系统的状态空间模型及性能分析
GCF-20A reverse circulation percussive rotary drill rig is a multi function drill rig with percussive drilling as the main means and rotary drilling as supplemented.
GCF - 2 0A型冲击 -回转反循环工程钻机是以冲击钻进为主、回转钻进为辅的多功能钻机 ,可适应软、硬岩石等不同地层钻进的要求。
The description is made of the introduction and analysis of the popular drilling hole technique that used in large boulder formation, including normal drilling technique such as digging, percussion drilling, rotary drilling, large diameter DTH drilling, explosion drilling technique and combined drilling technique.
介绍了目前在含巨大孤石地层中的成孔方法 ,包括一般方法如开挖法、冲击钻进、回转钻进、大直径潜孔锤钻进、爆破法、复合钻进工艺。
The paper introduced the use of airlifting reverse circulation rotary drilling techniques in practice of major diameter socket pile operation at Xiangfan city s Hanjiang No.
介绍了使用泥浆护壁气举反循环回转钻进工艺进行襄樊汉江四桥大口径嵌岩桩的施工实践。
Based on the principle of conversation of energy,the energy for rotary drilling has been analyzed.
旋转钻进是岩土工程钻探的主要钻进方式,从能量守恒原理出发,对旋转钻进的能量进行分析。
On the basis of analyzing the current drilling methods, a controlled penetration per revolution (PPR) is suggested to be used to control drilling process.
在分析了目前常用钻进控制方法的基础上提出了钻进中应采用控每转进尺的钻进控制方式,并对部分孕镶金刚石大钻头和微钻头进行了室内钻进试验,由每转进尺h和单位钻压每转进尺h/p得出不同岩石中不同钻头的合理每转进尺范围,且由h/p值对不同岩石进行了最佳钻头的选
Exchange losses arising from transfers of funds to and from related parties
联营各方转进转出资金的汇兑损失
Let' s go into the hall and have a look round.
让我们进大厅转一转。
move or proceed at an angle.
转一角度前进或进行。
Transition Progress,the Change of Development Strategy and Financial Transition;
转型进程、发展战略转变与金融转型
binary-to-Gray code conversion
二进制-格雷码转换
leading half axle
(拖拉机转弯时)前进半轴
And push the turnstile to get in.
就能推动转门进去了。
And then push the turnstile to get in
就能推动转门进去了
easing the bit in
钻头轻压慢转钻进地层
He swung the car into the parking lot.
他使车子转弯进出停车
tilt and telescopic steering colum
倾斜和缩进式转向管柱
crash-astern maneuver
全速前进转为全速后退
crash ahead maneuver
全速后退突转全速前进
Tanks ride on treads.
坦克靠履带转动而前进。
digital-to-binary converter
数字到二进制转换器
She turned into a cross street.
她转身走进一条横马路。
change to the decimal system.
使转化成十进制系统。
The train was switched into the siding.
列车转辙进出侧线。
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