Harassment with Sickles should primary focus on two objects: Ore Collectors and Oil Derricks.

用鐮刀騷擾應(yīng)該專注于兩個目標(biāo)：礦車和油井。

This method can be used for an overall and precise analysis of the structure of the derrick, and a case study shows that this method is suitable for all kinds of derricks.

實例測試和計算機載荷模擬試驗表明18禁黄网站禁片无遮挡，這種方法可使井架的試驗和分析更加全面超碰人人爆乳人人熟女超碰、準(zhǔn)確、可靠永久黄网站色视频免费大全91，而且適用于各種類型的井架国产日韩在线播放观看小视频。

Gin Pole - An "A" frame structure located at the top of standard derricks used to lift and lower the crown block into position.

天車人字架：一個& A &形框架結(jié)構(gòu)，位于標(biāo)準(zhǔn)井架的頂部青青青草视，用于起升和放下天車到指定位置大黄网站在线观看免费。

The stress in tower type of derrick is smaller than the other types of derricks under the combined action of compressive and torsional loads.

與僅受壓載荷相比，井架承受壓扭聯(lián)合載荷時作爱综合，弦桿應(yīng)力稍有增加国内免费合计自拍偷拍小视频，而非弦桿應(yīng)力有較大的增加。

1Hands employed in painting derricks , davits and masts .

水手從事于漆吊桿日本中文在线中文幕、吊柱和桅桿深夜在线观看网址。

This thesis presents a method of double nonlinear analysis to study the mechanical behavior of derricks steel structures.

本文應(yīng)用雙重非線性有限元方法研究井架結(jié)構(gòu)的力學(xué)行為。

According to the analysis, the nonlinear effects are mainly on the stiffness of downhole derricks steel structure.

本文研究了井架結(jié)構(gòu)的極限承載力問題国产操老逼视频。

Not to mention putting an engineer into a sudden transport is a very safe way to secure oil derricks.

不必多說的是放置一個工程師在快速運輸車?yán)锸欠浅０踩姆绞絹碚加偷V国产在线久。

The SWL of my derricks is 5 tons.

我的吊桿的安全工作負(fù)荷是5噸。

The mechanical characteristics of derricks in the domain of plasticity are considered by material nonlinerities analysis.

對線性黄片免费看3区、非線性兩種分析方法所得的結(jié)果進行了對比分析视频欧美日韩。