In order to assisting perambulation of underground petroleum pipeline,an infrared imaging method for rapidly detecting the stealing branches of pipeline and locating the leakage spots was proposed.

摘要為了輔助埋地石油管道巡線以及快速定位與排查偷油支管和泄漏點(diǎn)亚洲欧美激情国产综合久久久，提出了利用紅外熱成像技術(shù)探測埋地輸油管道的方法一级做a爱全过程视频。

In order to assisting perambulation of underground petroleum pipeline ,an infrared imaging method for rapidly detecting the stealing branches of pipeline and locating the leakage spots was proposed.

為了輔助埋地石油管道巡線以及快速定位與排查偷油支管和泄漏點(diǎn)一区高清精品视频在线观看，提出了利用紅外熱成像技術(shù)探測埋地輸油管道的方法另类国产资源在线观看。

The branch playscript with stage directions body uses the quality forging, the timber wood and the pipeline material is the same, this company in the carbon steel, the alloy steel, the stainless steel and so on many kinds of material qualities selects for the user.

支管臺本體采用優(yōu)質(zhì)鍛件欧美性爱特级黄，用材與管道材料相同色综合视频久久，本公司在碳鋼、合金鋼777av视频、不銹鋼等多種材質(zhì)供用戶選用人人摸人人交。

When operating under a single-line condition, the changes of air temperature and humidity of different point in the sprinkling area are not same .

單支管噴灌時(shí)，各點(diǎn)的溫度和濕度變化相差很大在线免费观看视频黄片；在有風(fēng)時(shí)131美女作爱视频一区二区，這種變化更為顯著，順風(fēng)側(cè)的溫差和相對濕度差要明顯的大于逆風(fēng)側(cè)的欧美一级αA。

Based on hf=λL/DV2/2g,formulain the form of hf= K1·F has beenderived for the hydraulic gradient lines of laterals of subirrigation systems. The formula is also applicable to that of a drip irrigation system. Anotherformula,based on Chezy's V=C RS,in the from of Hf=K2IQ2·F2 has been worked out for the laterals of sprinkler systems.

本文運(yùn)用管道水動力學(xué)原理伊人久久久AⅤ老熟妇，對噴灌、滴灌超碰在线色婷婷、滲灌系統(tǒng)灌水支管的水力坡降線導(dǎo)出表達(dá)的理論公式se亚洲国产综合在线，討論其調(diào)控的可能途徑，為試驗(yàn)研究這類系統(tǒng)的規(guī)劃設(shè)計(jì)問題從原理上提供一個(gè)分析方法亚洲黄网页。

Load-carrying capacity research of K-shaped unstiffened and inner-stiffenedconnections under axial load is carried out in this paper.

在K形非加勁與加勁RHS-CHS節(jié)點(diǎn)研究中14小箩利裸体免费视频，考慮支管在軸向力作用下節(jié)點(diǎn)的極限承載力。

Axial load, in-plane bending load and out-plane bending load are considered inthe loading-carrying capacity of T-shaped unstiffened and inner-stiffened RHS-CHSjoints in this paper.

在T形非加勁與加勁RHS-CHS節(jié)點(diǎn)研究中黄频网站久久，分別考慮了支管軸向力作用鲁鲁视频在线观看、平面內(nèi)彎矩作用、平面外彎矩作用三種單荷載作用情況iGAo视频网站在线观看。

Using the Bernoulli Energy Equation and Darcy-Weisbach Equaion, the for laterals and submains were established respectively. By successive linear ap...

應(yīng)用伯努力能量方程和達(dá)西-韋斯巴赫摩擦損失方程依次對干管和支管建立方程免费无码又爽又刺激羞羞视频，通過逐步迭代將非線性方程線性化，并提出了針對梳齒形和干管單向布置的豐字形噴灌系統(tǒng)的水力解析步驟国产偷亚洲偷欧美偷精品导航。

These formulae can be used to establish the hydraulic gradient lines of laterals easily.Thus, alternate measures for bettering the hydraulic gradient lines may then be a...

這類支管国产激情观看在线小视频，加密噴頭国产一区,二区。，噴灌的就向滴灌的接近人人澡人人舔，加密滴頭，滴灌的就向滲灌的接近99色色，型類有異哪里能看毛片，原理則同，本文只就滲灌五月天天色图、噴灌兩類各作簡論尤物网视频在线。

23 Large storage containers, and their attendant manifolds, filling and discharge lines should be appropriately identified.

大儲存溶劑美女网页黄a，和它們的伴隨的支管，裝料和卸料的線路應(yīng)恰當(dāng)標(biāo)識