吃奶呻吟打开双腿做受视频,色噜噜人体337P人体,亚洲国产成人久久综合下载,147大胆198人体毛片图

English中文簡(jiǎn)體

新聞中心

ISTT教育網(wǎng)絡(luò)研討會(huì)系列(三) 2021-05-10
ISTT推出了一個(gè)新的網(wǎng)絡(luò)研討會(huì)系列(僅面向會(huì)員),這次的標(biāo)題為:估算頂管的頂升力。演講者為臺(tái)灣國(guó)立中興大學(xué)土木工程學(xué)院的壽克堅(jiān)教授, 壽教授也是ISTT的副主席和臺(tái)灣非開(kāi)挖技術(shù)協(xié)會(huì)的名譽(yù)主席。此次的課程時(shí)間為:2021年1月29日美國(guó)東部時(shí)間9:00-10:00(北京時(shí)間:2021年1月29日22:00-23:00),此網(wǎng)絡(luò)研討會(huì)僅對(duì)CSTT會(huì)員開(kāi)放,會(huì)議視頻軟件為ZOOM。需要參加的此研討會(huì)的請(qǐng)聯(lián)系CSTT外事專員:Leon Xu (E-mail: leonxu@fastmail.com; ittc@cstt.org; 微信號(hào): leon_tsui)

ISTT Educational Webinar Series
Estimating the Jacking Forces for Pipejacking
29 January 2021 / 09:00 am US Eastern Standard Time (EST) / 14:00 GMT

Overview:
Among the others, pipejacking could be the most popular new installation trenchless methods. Jacking force is critical for a successful pipejacking, in which the control factors include overburden depth, frictional coefficient of soil-pipe interface, overcut, alignment, etc. Empirical formulas of jacking forces were reviewed. Comparisons on jacking forces with case studies were illustrated and discussed. New estimation method was also established and discussed.

Presenter: Prof. Keh-Jian (Albert) Shou


Vice Chairman of ISTT, Honorary Chairman of CTSTT, and Distinguished Professor of Department of Civil Engineering, National Chung-Hsing University, Taiwan. His research interests include rock mechanics/engineering, engineering geology, and trenchless technologies. He has published more than 200 papers on these topics and is now the editor of Tunnelling and Underground Space Technology (incorporating Trenchless Technology Research), and the associate editor of the ASCE Journal of Pipeline Systems Engineering and Practice.
新聞中心 贊助商 合作媒體 下載中心 常見(jiàn)問(wèn)題 友情鏈接
備案號(hào):滬ICP備10040940號(hào) 電話:86-21-54791130 傳真:86-21-54791130 郵件:ITTC@CSTT.ORG, 版權(quán)所有 上??莆跷幕涣饔邢薰? 滬公網(wǎng)安備 31011702006209號(hào) 技術(shù)支持:攸攸網(wǎng)絡(luò)
国产顶级绝伦推理电视剧有哪些| 日产乱码一二三区别免费一| 天堂最新版资源网| 成人毛片100部免费看| 久久精品成人免费国产片小草 | 美女视频黄频a免费网站18| 国内精品国产三级国产av | 精品无人区一线二线三线区别| 国产欧美另类精品久久久| 免费精产国品一二三产区区别| 两个人免费完整在线观看直播| 国产精品点击进入在线影院高清| 性虎精品无码AV导航| 亚洲VA国产日韩欧美精品| 亚洲性色AV一区二区三区| 久久精品av麻豆| 国内精品伊人久久久影视| 国产乱码一区二区三区爽爽爽| 亚洲日本乱码卡2卡3卡新区| 乌克兰性欧美精品高清| 人妻中文字幕无码系列| 成人艳情一二三区| 99精品国产在热久久婷婷| 99精产国品一二三产区| W永久939W乳液| 2012中文字幕高清在线中文字幕| 欧美精品视频大全在线观看| 日韩人妻无码一区二区三区99| 亚洲中文字幕永久在线全国| 亚洲av成人午夜电影在线观看| 99久久久成人国产精品免费| 婷婷五月花| 最新国产精品无码| 亚洲人成网77777色在线播放| AV免费播放一区二区三区| 精品剧情V国产在线观看| 一区二三区国产好的精华| 国产精品午夜剧场免费观看 | 一本一本久久A久久精品综合不卡| 无码人妻AⅤ一区二区三区用会员| gogogo免费观看国语|