查询词典 sail drill

Study is aimed at box threads of Φ177.8mm drill collar to analyze and calculate drill collar box thread with different stress-relief grooves using finite element method, the stress concentration of thread end of 3 types of box threads is gained under same boundary condition and load.

以177.8mm钻铤母螺纹接头作为研究对象，用有限元方法对加工有不同应力减轻槽的钻铤母螺纹接头进行了分析计算，得出了3种不同母螺纹结构在相同边界条件和载荷作用下螺纹消失端的应力集中情况。

Prepared by Tom Sheeran Drill string Drill bit The hoisting equipment consists of: a crown block, a traveling block, drilling line, and a drawworks to pull the drilling line up or down.

Prepared by Tom Sheeran 钻柱钻头起重设备由以下部分组成：天车，游动滑车，游动钢丝绳，和一个用来起降游动钢丝绳的绞车。

Milling machine, lathe, drill press, grinder, sparks machine accessories: universal dividing head, sub-dial, tilt angle plate, three-jaw lathe, four claw chuck alloy top, activities leading, single two-way Punch Former, and molybdenum wire , G word folder, UHT pneumatic tools, drill bits folder, wheel machines, grinding machines, degaussing devices, tools, Motorola, angle pads regulation, sinusoidal magnetic Units, sinusoidal regulation, Dresser, and Punch Grinding Machine, Plastic Punch , and the balance Units, such as the electrode rods.

铣床、车床、钻床、磨床、火花机配件：万能分度头、分度盘、倾斜式角度盘、车床三爪、四爪卡盘、合金顶尖、活动顶尖、单双向冲子成型器、钼丝、G字夹、UHT气动工具、钻头夹、砂轮机、磨针机、消磁器、工具万力，角度垫规、正弦磁台、正弦规，砂轮修整器，冲子研磨机、冲子整形器，平衡台，电极棒等。

Rock a drill barrow in planting;plant with a drill barrow

把去盖的蜂房放在特定装置中转动，用产生的离心力使蜂蜜分离出来

An animal-drawn seed plough; drill barrow; drill

古代的播种用的农具，由牲畜牵引，后面有人扶着，可以同时完成开沟和下种两项工作

I elected to drill through the clear top first with a drill bit for the box ...

i当选演练，通过明确的顶端第一与钻头的框。。。

The reason to use a small drill bit is to drill in pilot holes first.

之所以要使用一个小钻头，是演练在试验洞第一。

With the increase of borehole depth, the comparative advantage of hydraulic top-drive core drill decreases. In this case, the length of drill rod stand should be increased to improve efficiency of round-trip operation.

钻孔深度加大后，动力头钻机在钻进施工效率方面的对比优势会逐渐减弱，应该考虑采取加大钻杆立根长度，从而加大起下钻速度的措施。

Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultradeep well, high inclined hole, extended reach well and horizontal well, therefore, friction and wear between casing and drill pipe became a severe problem.

在深井、超深井、大斜度井、大位移井及水平井中，钻井时间延长、钻柱作用在套管上的侧向力增高，因此套管和钻柱的摩擦与磨损问题越来越突出。

ABSTRACT Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultradeep well, high inclined hole, extended reach well and horizontal well, therefore, friction and wear between casing and drill pipe became a severe problem.

在深井、超深井、大斜度井、大位移井及水平井中，钻井时间延长、钻柱作用在套管上的侧向力增高，因此套管和钻柱的摩擦与磨损问题越来越突出。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。