查询词典 drill

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。

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.

钻杆接头与套管摩擦磨损问题的理论与试验研究套管磨损

It is necessary to study the connecting technique between the drill cutter and placenta, because the connecting quantity affects the working life of drill.

钻头切削齿与胎体的连接质量关系到钻头的使用寿命，因此有必要对切削齿与胎体的连接技术进行探讨。

The main products are:"30 mm, 26 mm-mm, 24 mm and 20 mm hammer; 13 mm, 10 mm, and 6 mm electric drill and impact drill; 110 millimeters marble cutter, 100 ~ 150 mm series of angular grinding ray machine, electric saw, sanding machine."

主要产品有：&30毫米、26毫米毫米、24毫米、和20毫米电锤；13毫米、10毫米、和6毫米电钻及冲击钻；110毫米云石切割机、100~150毫米系列角向磨光机、电圆锯、砂光机等。&

Its hard to tell in the picture but I tried to "mill" part of the surface flat by attempting to bend and grind an old drill bit into a milling cutter and using the drill press as a vertical milling machine!

它很难说在图片，但我想&磨企图弯曲，研磨成铣刀旧钻头和一个立式铣床钻床用&表面平坦的一部分！

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。