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Option and Application of Rotary Drilling Rig's Drill Bit 旋挖钻头的选配与使用
Finite Element Calculation of Over- flxation of Mine- used Rotary Drill Bit's Tooth Hole 矿用牙轮钻头牙轮齿孔过盈配合的有限元计算
rotary drill bit 牙轮钻头
tricone rotary drill bit 三锥齿轮钻头, 三牙轮钻头
The rotary gear reducer is driven by a DC motor through a gearbox to pro-vide bi-directional drill bit rotation. 转动齿轮减速器是由一个直流电机驱动的，通过一个齿轮箱为钻头提供双向转动能力。
The mast assem-bly supports the rotary drill head and its hoisting mechanism. 支架组件支持转动钻头及其提升机构。
To drill holes in a mirror, you need a special mirror drill bit. 在镜子上钻孔，你需要一个特殊的镜子钻头。
Support the drill bit & MOS team on other production duties. 协助钻头及矿山安卡生产线的其他工作任务.
Sewing machine parts, Air stapler and nailer parts, Drill bit body, lock parts. 工业缝纫配件、射钉枪配件、工矿钻头类、锁配件。
Another probe, this one with a spinning drill bit at the tip, appears. 另外一个探针，顶端有一个纺纱一样的钻头。
A drill bit used for obtaining core samples in concrete or rock formations. 钻头被用来在水泥或岩层获取岩芯样品。
Instead stop your drill bit short of the headliner inside the vehicle . 而不是停止您的钻头短期的头条新闻车内。
Use a 5/8-inch drill bit, then a coarse cylindrical rasp to enlarge the drainage hole. 转一个5/8英寸的洞，然后用锉刀把这个“排水口”搞大点。
This sharpener is applicable to sharpening of such cutting tools as mill cutter,reamer,and drill bit,etc. 本磨刀器适用于立铣刀、铰刀、钻头等多中刀具的磨削，结构简单、操作方便、经久耐用。
In this paper, by theory analysis on drill bit, drill parameter, ream hole and time factor etc. 但在非开挖中如何运用简单孔口定向方法要求设计及施钻人员必须对钻孔的弯曲特点有较深入的了解,并要求要一定的施工经验。
The LB 28 large rotary drilling rig is an ideal complement to the LRB combined piling and drilling rigs. LB28大型旋转钻机是LRB组合打桩和钻孔机器的理想补充。
Sewing machine parts, air stapler and nailer parts, drill bit body, stainless steel hardware with satin supface. 工业缝纫机零件、射钉枪配件,锚件钻头类,不锈钢抛丸五金件。
In order to avoid the pollution caused by slurry around bridge-building sites, they use dry-boring by rotary drills where possible. 桥梁施工中为减少泥浆对桥位处的环境污染，尽量采用旋转钻机干法成孔。
With expert chassis of Rotary drilling rig and strong box type mast, it has high working stability. 应用徐工成熟技术制造的旋挖钻机底盘，结实的箱型臂架，具有超强稳定性；
After the analysis, the down-hole flow field inconsequence for the original drill bit is certain. 结合流体力学、湍流理论相关知识，完成了原型钻头井底速度场和压力场的分析，找到了原型钻头井底流场分布不合理的原因。