螺旋钻

Through the comparison of the five means which can machine the twist drill flute,we have gotten that the highest precise method is grinding.

文中通过分析五种加工麻花钻螺旋槽的方法，得出了加工精度最高的是磨制法。

Operate tracked or truck-mounted drill equipped with auger or other attachment to drill holes for building foundations or pilings

操作配有螺旋或其他附件的履带式或车载旋转钻井机在地基或木桩上钻洞。

The machine equipments needed has spiral drill press and drill to expand machine or diving drill press.

所需机械设备有螺旋钻孔机、钻扩机或潜水钻孔机。

Basic structure and operation principle of the parallel grinder for helical drill point grinding is presented.

给出螺旋面钻尖刃磨机床的基本结构及其工作原理。

The group's principal products include various kinds of single-head and multi-heads deep soil methed mixing pile machine, track drilling jumbo, static pressure pile machine, hammer pile machine, complex pile machine, screw pile machine, diaphragm wall drill machine for SMW method, rotatory drill machine, slurry pump, mortar pump, tap, drill rod, drill head, drill tool, construction material as well as textile machine and textile.

该集团公司的主要产品包括各种类型的单头搅拌桩机和多头搅拌桩机、各种类型的履带式凿岩台车、各种型号的静压桩机、各种类型的锤击桩机、各种类型的复合桩机、各种类型的螺旋桩机、各种类型的SMW工法的连续墙钻孔机、各种类型的旋挖钻机、各种类型的泥浆泵、沙浆泵、以及各种类型的水龙头、钻杆、钻头、钻具、建筑材料。还经营各种类型的纺织机械和纺织品等，我们还可以根据不同客户的要求和特点，设计不同的产品来满足客户的不用要求，我们可以为客户提供专业的服务。

Experimental results show that the cement soil can be used as boring medium for model test. Under the same conditions, the drill-type and the screw-pitch have a great impact on the required torque. In the practical application, the optimal bit should be chosen based on engineering geological conditions.

试验结果表明水泥拌合土可作为螺旋挤土模型钻头的钻进介质；在相同成孔条件下，钻头钻进所需成孔扭矩随螺距及钻型呈明显变化，在实际工程应用中应根据地层条件选择较为优化的钻头。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失