twisting vibration of drill string

1、

analysis of twisting vibration eigenfrequencies of rotary sucher-rod string

旋转抽油杆柱扭转振动固有频率分析

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2、

theoretical research on twisting vibration cylinder

扭转振动柱体的理论分析

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3、

the twisting vibration approach to determining the revolving inertia of special-shaped bodies

测定异型物体转动惯量的扭振法

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4、

mathematical modeling of free twisting vibration for a wire

导线的扭转自由振动建模

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5、

coupled bending and twisting vibration of thin walled beam bridges excited by horizontal seismic force with nonlinear damping

薄壁梁桥的强非线性弯扭耦合振动解析解

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6、

the twisting vibration characteristic analysis of the sucker rod string for progressing cavity pump oil production system

螺杆泵采油系统杆柱的扭转振动特性分析

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7、

that help keep the sea water clean.

这些化学物质可以帮助海水保持清洁。

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8、

they keep the sea water out and have allowed the dutch for hundreds of years to reclaim land from the sea.

它们挡住了海水，数百年来一直帮助荷兰人与海争地。

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9、

i was eager to swim there, because the salt does more than keep the sea fish-free, it makes you float like you're full of air.

我很想在死海游泳，因为死海里的盐不仅使海鱼无法生存，还可以使你像气袋一样飘浮。

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10、

the answer is that the seaweeds produce various chemicals that help keep the sea water clean.

答案是海藻产生各种各样的化学物质，这些物质可以保持海水清洁。

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11、

can golden dragon temple keep the sea from overflowing and the ground from sinking?

金龙宫建于堤边，祂能保佑地不再陷、海不溢堤吗？

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12、

work closely with business units to plan and implement effective price strategy.

与附件产品销售团队紧密配合,确保产品推广方案及价格策略的有效实施.

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13、

this paper described the design ideas of mis in detail, and presented specific programs.

本文详细的阐述了包供调度MIS的总体设计思想, 并提出了具体的开发方案.

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14、

this information directly impacted the geological understanding, dynamic reservoir model and the future field development plan.

该信息直接影响了地质认识、动态油藏模型以及将来的油田开发方案.

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15、

earth stress is the basis of drilling engineering design and field development project design.

地应力是钻井工程设计和油气田开发方案设计的基础.

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16、

the software developer ensures that technical solutions are translated into appropriate technical development.

软件开发人员负责将技术解决方案转化为合理的技术开发方案.

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17、

it is avial to frame scientific development plan and improve veracity and scientificaalness of the decision-making.

有利于制定科学合理的开发方案,提高决策的准确性和科学性.

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18、

develop concepts and design machine components.

开发方案和设计机器零件.

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19、

this research provides an important geological basis for oilfield development management.

本论文的研究为油田开发方案设计提供了重要的地质科学依据.

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20、

the development scheme poses ecological hazards due to its unsound practices.

该开发方案因其不合理的做法造成了生态危害。

词典精选例句