three-section cut 中文意思是什麼
three-section cut
解釋
三段掏槽-
In this paper, pure and doped ktp crystals were grown from the flux using a top - seeded method, and special technique have been used to lower the electrical conductivity to three orders of magnitude than common flux ktp, the values is up to 10 - 10 ( cm ) - 1, this overcame the shortcoming that common flux ktp cannot be used in e - o application field because of having higher electrical conductivity. the growth condition, doped elements and annealing technology were investigated. single crystals of ktp with high quality and big z - cut cross section were obtained by optimizing the parameter of crystal growth
本實驗採用頂部籽晶熔劑法生長了純的以及不同摻雜的ktp晶體，用特殊工藝處理技術將普通熔劑法ktp的電導率降低了三個數量級，達到了10 ~ （ - 10 ） （ cm ） ~ （ - 1 ） ，解決了普通熔劑法ktp晶體由於離子電導率太大而無法用於電光應用領域的困難；對ktp晶體的生長條件、摻雜元素以及退火工藝等進行了研究，通過優化生長工藝技術參數，突破了工藝技術生長難關，得到了高光學均勻性、具有大z切面的ktp單晶。 -
Abstract : a brief introduction to scientific research in the three gorges project ( tgp ) and the applications of research achievements is given, which include treatment of newly slited layer on the foundation of the first stage earth - rock cofferdam, dumping bottom technique of river closure in deep water, construction of cut - off walls in the second stage earth - rock cofferdams, 3 - d computer simulation of river closure, concrete casting alternatives and selection of major construction equipment for the second stage construction optimization of durability of raw materials of concrete, deep sliding resistance and stability of the intake dam section, the section of the intake of the power station, the intake penstock of the power station, layout and hydraulics problems of shiplocks, stability of high slopes of shiplocks, and optimization of the system structural anchor bars to reduce the risk of cracking in the concrete wall and 700mw turbine generator units
文摘:介紹三峽工程的科研項目，綜述三峽工程開工以來的主要科研成果及工程應用情況，包括：一期土石圍堰基礎處理與施工技術；大江截流上下游土石圍堰平拋墊底研究；二期圍堰防滲工程研究；大江截流計算機科學管理；大壩混凝土澆築方案及主要施工機械選型；混凝土的原材料和耐久性優化試驗研究；大壩基礎深層抗滑穩定研究；三峽電站進水口型式研究；鋼襯鋼筋混凝土引水管道研究；蝸殼打壓、廠壩間伸縮節問題研究；永久船閘的引航道布置、輸水系統及水力學、高邊坡穩定、混凝土襯砌墻的結構與支護研究；特大型水輪發電機組的科學研究。 -
A brief introduction to scientific research in the three gorges project ( tgp ) and the applications of research achievements is given, which include treatment of newly slited layer on the foundation of the first stage earth - rock cofferdam, dumping bottom technique of river closure in deep water, construction of cut - off walls in the second stage earth - rock cofferdams, 3 - d computer simulation of river closure, concrete casting alternatives and selection of major construction equipment for the second stage construction optimization of durability of raw materials of concrete, deep sliding resistance and stability of the intake dam section, the section of the intake of the power station, the intake penstock of the power station, layout and hydraulics problems of shiplocks, stability of high slopes of shiplocks, and optimization of the system structural anchor bars to reduce the risk of cracking in the concrete wall and 700mw turbine generator units
介紹三峽工程的科研項目，綜述三峽工程開工以來的主要科研成果及工程應用情況，包括：一期土石圍堰基礎處理與施工技術；大江截流上下游土石圍堰平拋墊底研究；二期圍堰防滲工程研究；大江截流計算機科學管理；大壩混凝土澆築方案及主要施工機械選型；混凝土的原材料和耐久性優化試驗研究；大壩基礎深層抗滑穩定研究；三峽電站進水口型式研究；鋼襯鋼筋混凝土引水管道研究；蝸殼打壓、廠壩間伸縮節問題研究；永久船閘的引航道布置、輸水系統及水力學、高邊坡穩定、混凝土襯砌墻的結構與支護研究；特大型水輪發電機組的科學研究。 -
For the needs of second - term project for pudong airport there is possibility to construct a tunnel of serving driveway under the operating runway, but it s obviously of great difficulty, and nowdays there are few such projects for reference, so it is urgent to carry out the research to make sure of the feasibility for the construction based on the analysis of geologic information, cross section of the line and restriction of construction, in this paper three construction schemes and the effects of each scheme were analysed : cut and cover method, pipe roof culvert box advancing method. shield driving method
摘要浦東國際機場二期工程建設存在著在運營跑道下實施地下穿越的可能性，在運營跑道下實施地下穿越難度很大，而目前國內外軟土地區在跑道下實施地下穿越工程很少，因此論文通過研究分析了服務車道地下穿越跑道區域的可行性及方案。
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