Team of oil artesian well came in the village later, I curious long to see the landscape of far, ignore risk unexpectedly, climb to be looked at to a few meters tall derrick alone.

后來村里來了石油鉆井隊sejjzzcom，好奇的我渴望看到遠(yuǎn)處的風(fēng)景，竟不顧危險igao网变成什么网站了，獨(dú)自爬到幾十米高的井架上遠(yuǎn)望全国免费人人干。

They were placed by a derrick mounted on rails on the bridge deck.

它們由軌道上的轉(zhuǎn)臂吊機(jī)吊放在橋面上。

Derrick: Yes. I'm going to bring this up in tomorrow's meeting.

是的色妞色妞，我會在明天的會議上提出這個問題的能够看黄的网站。

Derrick: You know I'm interested in teaching.

德瑞克：你知道我的興趣是在教學(xué)。

Derrick: I'll take it from here.

這里交給我了黃片www.。

If you kill Derrick you will be able to call Frank from then on to lower your wanted level.

如果你殺井架你將能夠呼吁坦誠從那時起农村老妇乱子伦视频，以降低您的希望的水平。

The tong counter-weight must not rest on derrick sub floor, derrick substructure sills or other obstruction. The counter-weights must be shielded to prevent crew members from accidental contact with the lines or weights.

大鉗懸重一定不要壓在井架小平臺上女人18毛片水多在线视频一区、底座基礎(chǔ)上或其他的妨礙物上性a免费视频\，配重一定要有防護(hù)，防止人員意外接觸吊繩和配重又硬又粗又长一级A片。

Derrick on Tianlun and rope set up the runway, the installation of hoists, winches double (3t) double rope traction, transport staff and lining materials; hoists the runway with a winch (2t) to tighten, In addition, the site symmetry at the bottom of the derrick cantilever mast for two, with two winches (3t) upgrading of materials, two separate winch (1t) Luffing operation.

井架上設(shè)天輪和鋼絲繩跑道717午夜福利视频网，裝置吊籠，用雙卷揚(yáng)機(jī)（3t ）雙繩牽引九七超碰人人操，運(yùn)輸人員和內(nèi)襯材料久久这里精品视频免费3；吊籠跑道用一臺卷揚(yáng)機(jī)（2t ）收緊，另外久久e6精品视频，在井架底部對稱部位設(shè)懸臂桅桿兩臺自慰网站污污，用兩臺卷揚(yáng)機(jī)（3t ）提升物料，另設(shè)兩臺卷揚(yáng)機(jī)（1t ）變幅操作18网站在线免费。

Derrick parameter changes at many complicated situations were observed by computer, which was impossible in field or laboratory calculation results showed stress of derrick was smaller when bearing weight at the lower part of the body than that at the upper part, and the maximum stress distributed in positive and back crossbeams of necking site.

通過計算機(jī)實(shí)顯示現(xiàn)場和實(shí)驗室都無法實(shí)現(xiàn)的多種復(fù)雜情況下井架參數(shù)變化過程性欧美久久。

The opening hatch cover method also not to be satisfied that using the warping head of cargo gear not through derrick boom open the hatch cover because using derrick boom is not safe.

開艙蓋的方法不令人滿意，起貨設(shè)備傳動輪彎頭在開艙時不穿過吊桿人人射人人摸人人草人人操人人射，原因為使用吊桿不安全东京热黄色网站。