In view of bearing capacity of the elastoplastic theory analysis, the author made a comparison between the achieved bearing capacity limit load pi / 4 of round base ( space problem ) and the limit load pi / 4 of bar groundwork foundation design ( plane problem ) from soil mechanics at home and abroad as well as foundation criterion, and explained why the value of formula in present design criterion from soil mechanics is inclined to be conservative. in the light of the author ' s many years experience of vibration test on the spot and the research work of relevant projects, the author worked over the dynamic pile testing of the bearing capacity of foundation and batholith, and gathered the parameter of dynamic analysis and testing. the author also talked over the difficult point of pile foundation design criteria in present batholith engineering world, i. e. the confirmation of batholith bearing capacity of pile end, from the following aspects : a ) confirmation of single axis counter - pressure strength of rock in house ; b ) f. e. m calculation of elastoplastic model ; c ) calculation of soil mechanics ; d ) deep well load test
然後,對巖土工程領域至今尚未解決,甚至不為人注意的考慮地基變形的地基承載力問題進行了實用化的探討,提出了考慮地基變形的地基承載力上程計算方法;對基於彈塑性理論分析的地基承載力國內尚未見報道的空間問題得到了圓形基礎(空間問題)的承載力界限荷載p _ ( 1 / 4 ) ,並與國內外土力學專著及地基基礎設計規范中的條形基礎(平面問題)的界限荷載p _ ( 1 / 4 ) ,進行了對比,從而定量上解釋了目前設計規范引用土力學承載力公式值偏於保守的這一情況;根據本文作者多年從事現場地基工程振動試驗及相關課題的研究工作,本文以截頭錐模型模擬地基,對地基(巖基)承載力的動測法進行了研究,為各類地基(包括巖基) ,匯總了動力分析和檢測川的參數:針對日前巖土工程界應用樁基設計規范中的難點? ?樁端巖基承載力的確定問題,從巖
石室內單軸抗壓強度確定、基於彈塑性模型的有限單元法計算、土力學計算及深斤載荷試驗四方面進行了深入討論;本文作者根據多年現場載荷試驗的工程實踐,對深井荷試驗裝置的
核心部分? ?反力裝置,設計了側壁支撐反力加載系統,該加載系統具有實用、簡便、穩定及安個等優點。
Chapter 1 d emonstrates the stone of the strategy - the new security viewpoint, its reasons, main contents and primary characters and stresses that mutual confidence, benefices, equality and cooperate form the kernel of the viewpoint. guided by the viewpoint, chapter 2 analyses the ideological source of the new security viewpoint and the strategy and the strategy ' s essential grounds and main contents. to bring the strategy into reality, chapter 3 discusses the primary ways and puts forward some tactful advice to set up the cooperative security regime of the area
論文第一章論述了我國亞太安全戰略的基
石? ?新安全觀產生的原因、主要內容和基本特點,強調互信、互利、平等、合作是我國新安全觀的
核心;第二章分析了我國新安全觀和亞太安全戰略的思想淵源、中國制定亞太安全戰略的基本依據和主要內容;第三章探討了實現該戰略的基本途徑和建立亞太安全合作機制的若干策略建議。
The management of this marine park is similar to other marine parks except that two core areas have been established at the northeastern coast of the island. they cover the part of the coastal area with the highest coverage of stony corals and a diverse assemblage of marine lives. these include fishes like butterfly fish, damsel fish, groupers, and other invertebrates like sea urchin, sea cucumbers and cowries
該海岸公園的管理模式與其他海岸公園相似,唯一不同之處是在東北沿海地區設立了兩個
核心區,該兩個
核心區的
石珊瑚覆蓋率甚高,並有多種海洋生物,包括魚類如蝴蝶魚、雀鯛和
石斑,以及無脊椎動物如海膽、海參和寶貝。
And these limit the diamond film application. in order to grow high quality diamond film, this experiment using cleanout and negative bias to improve nucleus
為了得到高質量的金剛
石薄膜本研究對于
石英玻璃的表面進行了清洗並用了負偏壓增強形
核的方法。
The compositions of usual elements and rare earth elements and inclusions of corundum megacrysts related to alkali basalt in changle, shandong province, are analyzed. in the main parts of corundum megacrysts are a large number of fluid - melting inclusions, zircon, ta - columbite inclusions, and in the central crystal core are a large number of melting inclusions. the corundum megacrysts were formed in different periods and different physical chemistry conditions. the crystal core was formed in magma system, and the main parts were formed in inhomogeneously geochemical conditions in which magam and fluid phases coexisted
分析山東昌樂與堿性玄武巖有關的剛玉巨晶不同部位的常量元素、稀土元素及包裹體組成.剛玉巨晶的主體以大量流體?熔體包裹體、鋯
石、鈮(鉭)鐵礦包裹體為主,而巨晶中的「晶
核」部位則以大量的熔體包裹體為主,反映研究區的剛玉巨晶是在不同的階段形成的.剛玉「晶
核」以及「銅皮剛玉」形成於熔體相為主的體系中,而主體剛玉則形成於熔體?流體過渡的急劇變化的不均一的地球化學環境中
This paper describes the structure, technical features and technical requirements of manufacture of a gasification stove with four contraposition burners on side walls, expatiates on its manufacturing process, key techniques and quality guarantee measures such as barrel formation, machining, assembly welding, heat treatment, subassembly secondary machining and precision detection
摘要氣化爐是煤化工的
核心設備,大慶油田金屬結構廠與哈爾濱鍋爐廠合作,為某大型
石化企業製造了一臺側壁4個燒嘴對置式新型氣化爐,該氣化爐是目前國內同類產品中最大的氣化爐。
Sometimes these rocks can be checked during unloading by an integrator-weighing device installed on the unloading or storage conveyor.
有時用裝在卸貨運輸機或入貨運輸機上的累加測重裝置
核對礦
石重量。
Cu-fe-ni sulfides are disseminated both in the core of titaniferous iron ore and in some other rocks.
Cu-Fe-Ni硫化物星散分佈於鈦磁鐵礦
核心部分以及其他幾種巖
石中。
The tantalite mineralisation at portee appears to be associated with quartz core zones, zones of k - metasomatism and with eluvial concentrations
鉭鐵礦的礦物性質是由
石英
核心帶、 k長
石同化礦帶和殘積層部分組合而成的。
Feb. 11 - at sundown on monday, they began their descent from the rocky slopes of mount arafat in the holy city of mecca, saudi arabia - a vast sea of humanity in pristine white robes collectively cleansed of its sins after completing a central ritual of the annual hajj pilgrimage
2月11日-在星期一日落時分的沙烏地阿拉伯聖城麥加,他們開始沿著阿拉法特山布滿巖
石的山坡徐徐而下。這潮水般身著潔白長袍的人群,在進行完一年一度麥加朝聖活動的
核心儀式后,已經集體滌除了他們的罪過。
Priority is given to development of heavy coal liquefaction and petrochemical equipment, heavy vessels for hydrogenation reactor and nuclear reactor and localization of heavy casting and forging for super - critical unit
重點開發煤液化和
石油化工等重型設備,加氫反應器和
核電等重型容器,超臨界機組配套大型鑄鍛件,實現超臨界機組國產化。
Through the analyzing the macro - structure to micro - structure, the author considers that retarding mechanism of citric acid is that citric acid and ca in the gypsum form the complexant ion, and hinder the crystallization center of dihydrate crystal bigger ; that of sodium tripolyphosphate is that it combined with ca, hinders the dissolve of hemihydrate. formation and growth of crystallization center ; that of bone glue is the glue - protection and chemical absorption action of active group, which also retards the formation and growth of crystallization center
通過宏觀到微觀的分析,筆者認為,檸檬酸的緩凝作用的原因主要在於檸檬酸與鈣形成絡合離子,影響了二水
石膏晶體的晶
核長大過程;多聚磷酸鈉與鈣形成某種復鹽,對于
石膏晶體的溶解、成
核和長大過程均有強烈的阻礙影響;骨膠則在於膠體對半水
石膏的包裹和活性基團的化學吸附,使二水
石膏晶體的成
核和長大困難。
Through the study of the example of shaxi porphyry body in anhui province, the authors first figured out the storage time of plagioclase phenocrysts, then calculated the nucleation rate and growth rate of the crystals and, on such a basis, established the thermal model for cooling of the hypabyssal magmatic system
本文試圖通過對安徽沙溪斑巖體進行實例研究,先求出斜長
石斑晶的存儲時間,再算得晶體成
核速率和生長速率,進而建立起淺成巖漿體系冷卻的熱模型。
Ndfeb magnet is mainly made of neodymium iron and boron, with excellent magnetic property abundant raw material and reasonable prices, ndfeb magnet can be used as an ideal magnet in mini - motor permanent magnetic resonance sound device magnetic suspension system, magnetic transmission machine and iatrical apparatus and etc. for ndfeb, its surface is usually treatd with some special methods. the surface treatment method include zine nickel tin silver gold plating phosphor and spray epoxy resin etc
其主要應用在微特電機、永磁儀表、電子工業、汽車工業、
石油化工、
核磁共振裝置、音響器材、磁懸浮系統、磁性傳動機構和磁療設備等方面。釹鐵硼磁鐵容易生銹、氧化,所以對釹鐵硼磁鐵,其表面通常需作電鍍處理,如鍍鋅、鎳、銀、金等,也可以做磷化處理或噴環氧樹脂來減慢其氧化速度。
Specification for isotropic and near - isotropic nuclear graphites
等方性和近等方性
核石墨規范
In the paper, the effect of ion bombarding on nucleation of diamond by negative substrate bias - enhanced was investigated in theory, and some experimental phenomena were explained
摘要從理論上研究了負襯底偏壓增強離子轟擊對金剛
石核化的影響,並用理論解釋了一些實驗現象。
Neptune is similar to uranus in many ways, it has a rocky core, a ring system, many satellites, a magnetic field, etc. however, it seems to be more dynamic ; its surface has a
海王星和天王星有不少相似的地方,它亦擁有巖石核心光環眾多衛星和磁場等等。但是海王星的大氣看來比天王星的活躍,表面有稱為