查询词典 cone bit

The study of three cone bit of kinematics simulation models and motion characteristics［J］.

三牙轮钻头运动学仿真模型及其运动特点研究［J］。

According to the models and the simulating processing, the simulation programme for the lateral vibration of the cone bit is developed.

根据所建模型及仿真过程，编制了牙轮钻头横向振动的仿真程序。

14 Drilling with cone bit in the section.

此段地层采用牙轮钻头钻进。

Matamoros is located in carrollton and Mexico manufacturing plant will continue to be the world's oil, gas, mining and industrial customers to provide cone bit.

位于卡罗尔顿和墨西哥马塔莫罗斯的制造厂将继续为全球的石油、天然气、采矿和工业客户提供牙轮钻头。

Finally,according to the geometry structure of bits,the motion characteristic of tooth in each row was analyzed, including their scraping mode influenced on the cone/bit ratio.

在过去几十年中，许多研究者对牙轮钻头的运动进行研究，但是他们都对这些问题作了过分的简化，以致

Bits without moving parts, can withstand the high penetration rate, with the downhole drill motor can be used in conjunction with higher economic efficiency, is the cone bit strong competitors.

钻头无活动部件，能承受高钻速，与井下动力钻具配合使用能获得较高的经济效益，是牙轮钻头的强有力的竞争者。

Cone bit ; numerical control technique ; machining ; programming

牙轮钻头；数控技术；机械加工；程序设计

Cone bit ; transmission ratio ; penetration rate ; simulation test

牙轮钻头；传动比；机械钻速；模拟试验

Applying finite element method,the dynamic characteristics of drill string with cone bit in straight hole were simulated,and the whirl,deformation and the dynamic stress in air drilling were compared with the ones in drilling fluid drilling .

应用有限元方法，仿真了空气钻井时斜直井眼中带牙轮钻头钻柱的动力学特性，比较了空气钻井和钻井液钻井条件下钻柱的涡动、变形以及动态应力状况，探讨了空气钻井钻柱失效的动力学机理。

The shape of cuttings is related with the drilling parameters. The cuttings often appear in irregular flakes during air hammer drilling, and in spindle shape during cone bit drilling.

岩屑的形状与钻井参数有关，空气锤破碎岩石的岩屑形状呈不规则片状，牙轮钻头破碎岩石的岩屑形状呈纺锤形。

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％。