B.Rotating Nozzle Port Tug; Z-Pellers Tug; Split Hopper Barge, Dredge Boat and Special Engineering Ship; Derrick Barge, Port Crane Vessel and Pilot Ship, etc.

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The company involves in various businesses, including designing, manufacturing, selling, installing, maintaining, leasing and technique service for crawler crane, gantry crane, derrick crane, bridge crane, tower crane and other nonstandard lifting machines.

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The results show that the vibration intensity of the substructure has a connection with the depth of the well, the geological condition and the density of drilling fluid; the horizontal vibration of the substructure is mainly caused by bent kelly; the included angle between the axis of cardan shaft and the derrick floor is also the cause of the vibration in three directions, and the cause of t...

分析結果表明欧美一级特黄AAAA片免费，底座的振動強度與井深、地質(zhì)條件和鉆井液密度有關国产高清日韩；彎曲的方鉆桿是造成底座水平方向振動的最主要原因igao在线观看免费观看；萬向軸因與鉆臺面存在夾角，從而引起底座在三個方向的振動www.tynxxw.com；采用四擋鉆進時www.九九爱，萬向軸的工頻及其倍頻接近底座垂直方向的固有頻率是引起底座在該方向振動強烈的原因。

In deep water artesian well, be close to to make artesian well slop can send sea level above from pump of the bottom of a well 80 - on the derrick floor of 100ft.

在深水鉆井中三级欧美日韩第一页，為了使鉆井泥漿能從井底泵送到海平面以上接近80－100ft的鉆臺上丝袜美女国产av。

Standpipe - The standpipe is that pipe which carries mud from the rig floor into the derrick to the kelly hose.

立管：立管是從鉆臺攜帶泥漿進入井架到方鉆桿水龍帶。

"Derrick:a machine for hoist ing and moving heavy objects, consisting of a movable boom equipped with cables and pulleys and connected to the base of an upright stationary beam."

懸臂起重機：提升和移動重物的機器全国最大黄色网站视频，它由一個帶有纜繩和滑輪的可移動的、并與一根由向上靜止橫梁的底座連接的起重桿組成直接观看黄网站免费视频在线播放。

Of bridge could be improved Truss lifting tool adopts for derrick mast hoist that had been made by our unit, readymade member will be lifted and positioned. It is of the feature of simple construction equipment and quick construction progress and a potential of popularization.

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In this paper,an automated tripping system for downhole pipe string was put forward,which includes the tractor hoist,the derrick,the hydraulic tongs,the movable casing elevator,the fixing spider,the vertical pipe rack and the controlling system.

提出了一種自動起下管柱作業(yè)系統(tǒng)國產精品色視頻，主要包括通井機偷窥综合网、井架、液壓鉗国产无码乱伦午夜、筒式吊卡a片在线观看资源、卡瓦支座久久免费看黄视频、立式排管架和控制系統(tǒng)等，支座卡瓦為彈性體微條嵌入式結構欧美亚洲性交短视频，筒式吊卡能自動卡入和松開管柱接箍亚汌人成伊人成综合网222，排管架可實現(xiàn)管柱的立式排放，控制系統(tǒng)協(xié)調(diào)各部分的工作国产久精品A片。

How does Derrick feel about Wendy making one-off solutions for each customer?

如何井架的感受溫迪作出一次過的解決方案為每個客戶日本特级特黄aaaa大片？

Derrick discourages Wendy from making one-off solutions because doing so causes efficiency to go down.

井架勸阻溫迪作出一次過的解決方案，因為這樣做的原因效率下降免费一级啪啪啪视频。