Since August 21 when there was an accident at the Montara offshore drilling rig's well head, around 403, 000 litres of oil have been pumped into the Timor Sea.
自8月21日蒙达拉海上钻井平台的井口发生事故以来，约403,000公升石油被注入帝汶海。
Engineers had spent days pumping heavy drilling fluid into the leaking well head on the ocean floor in a high-pressure bid to smother the gushing crude and ultimately seal the well with cement.
工程师们数日来一直向海底的泄漏油井泵入大量的钻探泥浆，希望用高压堵住喷涌的原油，最后用水泥封死油井。
The location of vestibular window and the round window is relatively stable, so the stapes head can be used as a reference for drilling scala tympani.
前庭窗与圆窗的位置关系相对稳定，因此镫骨头（砧镫关节）可作为参照标志来确定鼓阶钻孔的位置。
In the process of drilling, the rotating control head is often damaged by the lateral force of the kelly, and this may lead to serious accident.
在钻井过程中，方钻杆的侧向力作用常常导致旋转控制头损坏，造成事故。
The utility model discloses a novel drilling machine, mainly comprising a drilling machine head case, a linear slideway, a stroke sliding plate, a return tension spring and the like.
本实用新型公开了一种新型钻床，该钻床主要由钻床机头箱、直线滑道、行程滑板、回位拉簧等组成。
The drilling head rotational speed can adjust, the drill hole efficiency is very high, the hole position is accurate, and it is suitable for the construction glass and the furniture glass processing.
钻头转速可调，钻孔效率高，孔位准确，适用于建筑玻璃与家具玻璃的加工。
Based on the mechanical model of single bit, drilling loads on the cutting head of tunneling machine are simulated by means of computer in this paper.
基于单个截齿的受力模型，对掘进机截割头钻进工况载荷进行了计算机模拟，为截割头的结构设计和参数优化提供了理论依据。
I learn Chinese characters by drilling them into my head.
我用死记硬背的方式学汉字。
I learn Chinese characters by drilling them into my head.
我用死记硬背的方式学汉字。
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