helicopter rig

用法例句

Development of ZJ30HDB helicopter-hanging drill rig;

ZJ30HDB直升机吊运钻机的研制与开发

When the reservoirs are developed with conventional straight-hole rig and horizontal,some special technique problems occur in drilling and completion because the surface distance is short from the straight-hole interval of object zone.

新疆油田拥有丰富的浅层稠油资源,采用常规直井钻机钻浅层稠油水平井开发因地面距离目的层垂直井段短,使得钻井完井工艺面临一些特定的技术难题。

Study on equivalent damping calculation for hydraulic damper of helicopter rotor;

直升机桨叶液压减摆器等效阻尼计算研究

The manufacture of a new type of underwater exit light of helicopter;

新型直升机水下逃生照明指示灯的研制

Navigation systems of modern helicopters;

现代直升机导航系统及其仿真

Study on Simulation and Evaluation of Helicopters' Flying Performance and Reliability;

直升机飞行性能和可靠性的仿真与评估研究

Anumerical method usingthe three-dimensional Euler equations is presented to predict the rotor in-ducedvelocity flowfield of a real helicopter and to provide a calculated method on the downwash flowfield forrocket or missile emission on helicopters.

建立了三维欧拉方程数值模拟旋翼流场的方法和模型,以用于实际直升机旋翼诱导速度场计算,为火箭导弹发射提供一个旋翼下洗流场计算方法。

When ship-borne anti-sub helicopters carry out anti-sub search missions,because of need to fly at very low altitude,their mobility is affected,so they are prone to various weapons,especial- ly missiles.

舰载反潜直升机在海上执行反潜搜索任务时,由于需要超低空飞行,飞行高度较低,机动能力受到一定的影响,容易遭受各种武器的攻击,尤以导弹威胁最大。

The particularity and practicality of harmony operations of close-coupling multiple helicopters indicate that the researches on it are urgent and necessary.

针对紧耦合多直升机协调操作的特殊性和实用性,分析了多直升机协调操作研究的必要性。

Helicopter is a complex system and the harmony operations of close-coupling multiple helicopters have their particularities.

针对直升机的复杂性和紧耦合多直升机协调操作的特殊性,分析了多直升机协调操作的必要性,建立多直升机间的协调力学模型,并采用牛顿迭代法进行了配平计算,所得姿态量和控制输入量为多直升机协调操纵的飞行控制系统提供了参考输入量,为进一步分析多直升机的动力学建模及稳定性打下了基础。

SHALLOW HORIZONTAL DRILLING TECHNOLOGY BY USING VERTICAL-WELL RIG IN HENAN OILFIELD

河南油田直井钻机钻浅层水平井钻井技术

ERW Drilling and Completion Technology in Ultra-Shallow Heavy Oil Reservoir with Conventional Vertical Rig

直井钻机钻超浅层稠油大位移水平井钻井完井技术

To bore(a shaft) with a trepan.

钻用钻井机钻（矿井）

Development of the TZJ40(B) vertical derrick's traction-driven rig

TZJ40(B)直立井架拖挂钻机的研制

Raise-boring machines

GB/T12761-1991天井钻机

spider bow [for well drilling machines]

星形斗[钻井机用]

kelly for well-drilling machiens

旋转钻孔,钻井机用

mixed oil drilling rig

复合式石油钻井钻机

Present developmentsituationoflargeverticalshaftdrillshome and abroad and the drill development proposals in China ( Ⅰ )

大直径竖井钻机发展现状与我国钻机发展建议(一)

APPLICATION OF ORGANIC SALT DRILLING FLUID IN THE THIRD SECTION OF WELL T4031

有机盐钻井液在T4031井三开井段的应用

drive bushing, Kelly,for well-drilling machines

凯氏传动衬套,钻井机用

tool joint for well-drilling machines

工具接头,钻井机用

computerized well planning program

计算机钻井设计程序

Investigation of Dynamic Characteristics on the Hydraulic Control Steering Mechanisms of Automatic Vertical Drilling Tools;

自动垂直钻井工具的液控导向机构动态特性研究

drilling-in unit

洗井和钻油层用的小钻机

Oil whooshed up when the drill hit the well.

当钻孔机钻井时，石油喷了出来。

The men dug the oil well by Boring through the ground with huge drills

工人使用巨大钻机钻透地层挖掘油井。

Simulation Research on Drill Pipe of 2000 Meter Water Well Rig;

2000m水井钻机的钻杆仿真研究