This paper introduces gear wheel drill speed system which composed of Siemens PLC and Siemens inverter.
介绍了由西门子P LC和变频器组成的牙轮钻机的调速系统。
Means are provided for varying the spindle speed and (on some machines) for automatically feeding the drill into the workpiece.
另有各种装备可改变转轴速度及使钻头自动钻入工作件中。
Two key factors for drilling high quality holes of carbon fibre reinforced plastics, which are to keep the fine sharpness of the cutting lip of the drill and to use high drilling speed are discussed.
探讨了获得钻削碳纤维复合材料高质量孔的两个关键因素：保持钻头切削刃的良好锋利性和采用高的钻削速度。
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。
Insert tooth bit applies in every serious geography especially hard rock; it has stable drilling speed and can drill the hardness of rock at 1-6 grades.
镶齿牙轮钻头主要适用于地质较硬的岩层，它钻进速度稳定，可以钻进1-6级地质硬度，适用于各种恶劣的地质环境。
Our brands are: Shun Code "Hong drill" Dragon Speed "and other well-known brands, as well as a wholly owned subsidiary" of a tower, money, Zhejiang Fire Technology Co.
旗下品牌有：“顺典”“鸿钻”“龙速”等国内知名品牌，还有一家全资子公司“浙江钱一塔消防科技有限公司”。
Taking use of the shock absorber, it can raise the service life for drill bit and drill tool, speed up drilling, get rid of drilling jumping, well protect surface equipments and drilling tools.
所以在钻井作业中采用减震器，对于延长钻头使用寿命，加快钻进速度、克服严重跳钻、保证正常钻井、保护地面设备及钻具是十分可靠的。
When rotation speed is low, factors effecting soil delivering resistance are the soil volume carried by the vane and the spiral angle of drill.
采用两种不同螺旋角钻具对粘土进行输土实验，对比阻力结果证明了理论的正确性。
The overflow tank level and the speed of both the role of Chip can be changed by changing the factors such as the nozzle inlet pressure, drill gage width, nozzle diameter of the PDC bit.
改变喷嘴入口压力、钻头保径宽度、喷嘴直径等影响因素对改变井底漫流层和排屑槽内的速度都有作用；
The use of a high-speed dental drill may introduce air into the soft tissue and lead to subcutaneous emphysema and pneumomediastinum.
拔牙时所使用的高速牙科电钻可能使得气体进入软组织，进而导致皮下气肿及纵膈气肿。
With the development of mechanization and drill and blast in extra - long tunnels with a small section, the matching machinery is very important to driving speed.
随着隧道施工机械化程度的提高，在特长小断面隧道工程中采用钻爆法掘进施工，其机械配套是制约掘进速度的重要条件。
An analysis related to various kinds of soil cutting by earth auger, this paper puts forward that running speed of frill should be faster than critical speed so as to increase the efficiency of drill.
通过分析长螺旋钻机在切削各类土质时，钻具的角速度与土块运动机理关系，提出确定钻具临界的方法，而工程施工中钻杆的实际转速应大于临界转速，以提高钻机的工作效率。
By testing vibration frequency, moving speed of drill rod, atmospheric temperature, pressure and consumption, a test report is automatically worked out.
通过测量凿岩机工作时的振动频率、钎杆转速、气温、气压和耗气量等性能参数，自动生成测试报告。
It is pointed out that the high speed drilling by using the thick film CVD diamond drill is a good method to get high quality holes.
指出了采用厚膜CVD金刚石钻头进行高速钻削加工是获得高质量孔的良好方法。
Objective:To investigate the superiority by using high speed air turbine drill in extraction of impacted mandibular teeth, especially in low mesioangular impaction and horizontal impaction.
目的：探讨高速涡轮机在辅助拔牙，特别是在下颌近中低位及水平位阻生牙的拔除中的优越性。
These are great sets because they are intense and speed-focused. Emphasizing the drill work keeps the stroke together. It eliminates bad technique - a common hurdle when training breaststroke.
这些都是很好的练习，因为他们强度很高，而且要求有速度。强调这些练习保持好的姿势。它可以消除错误的技术——在训练蛙泳时的一个普遍的障碍。
The speed of soil delivering and resistance of auger drill are analyzed theoretically and their formulae are presented.
对螺旋钻具输土速度与阻力进行理论分析，给出了输土速度公式和阻力公式。
The thrust is greatly affected by the feed speed while the torque is obviously affected by drill geometries.
进给速度对轴向力的影响较大，而钻头几何形状对扭矩的影响较大。
The switch of the direct current stepless speed regulation is widely used in the electrician switch. The pistol electric drill direct current stepless speed regulation switch belongs to example.
直流无级调速开关在电工开关中有着广泛的应用，手枪电钻的直流无级调速开关便是其中一例。
The model includes of important characteristics of drill bit and drilling operation, i. e. sectional geometrical property of drill, spiral Angle, speed and cutting force created during drilling.
该模型包括了钻头以及钻削操作的重要特性，即钻头的截面几何特征、螺旋角、转速和钻削过程中产生的切削力。
The perfect performance of the DBS drilling rig extends life of drill bit, enhances drilling speed and makes the drilling work more secure and scientific.
DBS钻机性能优良，能延长钻头使用寿命，提高机械钻速，并使钻井更安全、科学。
'Move!' bawled the drill corporal. 'Come on, speed it up!' he sprinted effortlessly to the rear of the gasping, panting column of men and urged us on from there.
训导下士轻轻松松地疾步赶到气喘吁吁汗出如浆的纵队后方，敦促我们道：“跑啊，快点，加把劲！”
Without strides or some type of speed-form drill, it's easy to get sloppy in your running and do only slow running with bad form (for more information, see "Good form" on page 12).
没有大步跑或其它类型的速度-跑姿训练，您很容易变得懒散，只会跑姿很烂的慢跑(更多信息，参见第12页的“GoodForm”)。
With the increase in rotary speed, the motion state of drill string will be successively transformed from regular swaying into irregular swaying and regular whirling.
随转速的增加，钻柱的横向运动逐渐由规则摆动向无规则摆动和规则反向涡动转化。
The weight on bit and rotary speed are the main factors affecting the motion behavior of drill string. The higher the rotary speed is, the more easily the regular whirling will be formed.
钻压和转速是影响钻柱运动状态的两个主要因素，转速越高，越容易形成规则涡动；
By the action of high roatry speed, excentric shaft connection intensifies the fatigue failure of drill tool.
为了达到较好的防斜目的，必须增大钻进时钻头的转速，在高转速的作用下，偏轴接头加剧了钻具先期疲劳失效。
The electric drill with small power or a high rotating speed increases torsion or reduces the rotating speed by being provided with a speed reducer in order to increase dredging effects.
对功率小或转速高的电钻通过设置减速器来增大扭力或降低转速，以提高疏通效果。
The electric drill with small power or a high rotating speed increases torsion or reduces the rotating speed by being provided with a speed reducer in order to increase dredging effects.
对功率小或转速高的电钻通过设置减速器来增大扭力或降低转速，以提高疏通效果。
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