主电机可变频调速，以适应不同的切削力和钻孔速度。
The speed of main motor can be adjusted in variable frequency so as to adapt different cutting force and drilling speed.
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。
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.
乐滩水电站I标工程帷幕灌浆工程量大，工期紧，影响施工速度的最大因素是钻孔速度。
Considering the large work quantity and tight time schedule for the curtain grouting in Bid I of Letan project, drilling speed is the most critical factor in the construction progress.
相对于用常规的手工方法加工孔，钻模使得钻孔、铰孔和攻丝速度快很多而且精度更高成为可能。
Jigs make it possible to drill, ream, and tap holes at much greater speeds and with greater accuracy than when the holes are produced by conventional hand methods.
其成功的关键是，选择适当的钻孔点和注入的深度及血肿量，此外掌握好注入的速度也很重要。
The keys of success were that the site for drilling, the depth and volume of injecting blood should be properly selected; in addition, the speed of injection was also important.
行走速度太慢，钻孔移位慢，钻孔后撤离爆破现场的动作也慢，影响整个工程的进度。
But too slow travel speed is directly related to slow drilling displacement and slow evacuation from the explosion site after drilling, which will influence the overall project's schedule.
对大冶铁矿大理岩和原生矿体的钻孔指标进行监测，建立合理单耗与钻进速度关系式。
Through monitoring and measuring of drilling indices of marble and primary ore body of Daye Iron Mine, a rational relationship between unit energy consumption and drilling speed is established.
在绢云母石英片岩中开挖隧洞，使用多臂钻造孔爆破，出现钻孔有规律的弯曲现象，影响了钻爆速度和成洞质量。
When we dig a tunnel in sericite quartz-schist with dobby drills, regular bending of the boreholes appears, which affects drilling speed and the borehole quality.
用钻孔煤心现场解吸数据可以近似得到废弃矿井甲烷涌出速度对时间的下降曲线。
To use the drilled coal core site desorption data can get a drop-down curve of abandoned mine methane emission rate versus time approximately.
突出煤层卸压后用钻孔瓦斯涌出初速度进行工作面预测和效果检验时经常超过突出临界值，造成开采保护层后煤层突出危险性更大的现象。
The main factors affecting the initial speed are studied and the causes of initial speed from borehole gas emission often exceeding limit theoretically explained.
钻孔瓦斯流量直接关系着钻孔抽放煤层瓦斯涌出量及钻孔瓦斯涌出初速度的判定，因此研究钻孔瓦斯流量的变化及发展趋势具有较大实用价值。
Gas flow from borehole directly relates to the gas emission from drill drainage coal bed and judging the initial velocity of gas emission from the borehole.
长螺旋钻孔管内泵压CFG桩成桩混合材料施工方法，具有施工噪音低，成桩速度快，工程造价较低等特点。
Long spiral hole pump pressure CFG (Cement Flyash Gravel) pile construction technology has such advantages as small noise, quick construction rate and low construction price.
这转速调节器电路原理图可以控制你的钻机钻孔机或打孔速度。
This rotative speed regulator circuit schematic allows to control the holing speed of your borer or driller machine.
他说机器钻孔的速度比12个工人一起挖掘还快。
He said it could drill holes faster than twelve men working together.
他说机器钻孔的速度比12个工人一起挖掘还快。
He said it could drill holes faster than twelve men working together.
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