查询词典 drilling

］ In order to study the effect of machining processes on the surface condition of fastening holes drilled on 7075 aluminum alloy for aircraft assembly, the surface microphotograph and surface layers microstructure produced by the five kinds of drilling processes were observed and analyzed by means of SEM and optical microscope.

摘 要］为研究加工工艺对7075-T7351铝合金飞机装配紧固孔表面质量的影响，通过扫描电子显微镜和光学显微镜，分别对5种不同制孔工艺所产生的表面微观形貌和表层组织变化进行了观察和分析。

Before design of this program , the researchers and engineers in the coal mine obtain the data with detector and by drilling, prospecting tunnel.Then the researchers synthetically analyze the geology data such as the coal seam construction,dip angle,thickness of coal mine.

本项目在设计前，作者与矿工程技术人员利用钻孔和探巷、瑞利波探测仪、坑透仪获取资料来综合分析进行试验的102综放工作面的煤层结构、倾角、厚度、顶底板岩性起伏变化等地质资料，认为能够采用综放采煤技术进行开采。

Through the research of this paper, the new standpoint is verified theoretically that borehole collapse will be caused by radial shear fracture in formations resulted from over-high drilling fluid density, and a new concept is given out that to maintain a stable borehole the maximum and minimum mud density should both be controlled.

通过本论文的研究，从理论上证实了泥浆密度过高将导致地层产生径向剪切裂缝而造成井壁坍塌的客观规律，提出了稳定井壁需要同时控制泥浆密度上、下限的新观点。

Mechanical reason of borehole collapse in brittle shale is researched. With the elastic theory, the formula for calculating the maximum and minimum drilling fluid density that would cause the initial shear fracture in vertical and inclined borehole is derived and the influence of formation non-linear deformation property is taken into account. The solution of the formula is given by iteration method.

研究了硬脆性泥页岩井壁坍塌的力学机理，利用弹性力学理论推导出了直井、斜井井壁产生初始剪切破坏而造成井壁坍塌的泥浆密度上、下限的理论计算公式，并对地层非线性变形性质对井壁应力的影响进行了修正，编制了迭代法数值求解软件。

That are widely used in drilling and mining engineering construction and other industry .

广泛应用于矿山钻采工程建设等行业。

It has the water quality characteristics of changeability and complexity of component, and it also has the characteristics of dispersing and movability of drilling operation.

钻井废水具有色度高、悬浮物浓度高、CODcr含量高、含有一定量的油的复杂性和多变性的水质特点，以及钻井作业的分散性和流动性的行业特点。

Drilling and mucking is the way that gold is taken from the ground. A mucker is a machine that gets the rock out of the ground and moves broken rock onto a conveyor belt. A hand mucker is a man who shovels ore and unwanted rock out of a mine.

钻岩及除渣是将黄金自地面挖出来的方式，除渣机是一台机器，负责挖出地下的石头，并将这些碎石运送至输送带上，而手动除渣则是指工人由开挖矿砂及不要的石头。

In 2006 a devastating mudflow erupted near a site in Java where Lapindo Brantas, a Bakrie-controlled company, was drilling for gas.

在2006年一次毁灭性的泥流突然爆发，且恰好发生在爪哇附近，在那里Bakrie控制的一家公司Lapindo Brantas正在开采天然气。

In combination with these experimental phenomena and theoretical analysis, the foam corrosion inhibition mechanisms in foam drilling are first put forward in the paper. They include: the adsorption of foaming agent on steel surface; the complex of foam-stabilized viscosifier with the multivalence metallic ions in formation water; isolating the steel from oxygen by foam; and fixing sands and reducing washout by foam.

结合实验现象和理论分析，首次总结提出泡沫钻井中泡沫的缓蚀机理，泡沫的缓蚀性主要在于：发泡剂在钢铁表面的吸附；稳泡增粘剂能与地层水中的多价金属离子络合；泡沫对氧的隔绝；泡沫能固定砂粒，减少冲蚀。

A new approach for controlling the dilatancy damage and deformation at the nearside of borehole was presented and used to calculate the density of drilling fluid for deep big-thickness salt formation.

因而提出一种控制近井筒盐岩不产生扩容损伤变形的新方法，并利用该方法设计了深部巨厚盐层钻井液密度。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。