典型化學元素 的英文怎麼說

中文拼音 [diǎnxínghuàxuéyuánsù]
典型化學元素 英文
typochemical element
  • 典 : Ⅰ名詞1 （標準; 法則） standard; law; canon2 （典範性書籍） standard work of scholarship 3 （典故...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 素 : Ⅰ形容詞1 （本色; 白色） white 2 （顏色單純） plain; simple; quiet 3 （本來的; 原有的） native Ⅱ名...
  • 典型 : 1 （在同類中最具有代表性的人或事） typical case; typical example; model; type; specimen 2 （具有...
  1. We characterized the security issues in asp - based networked manufacturing system, especially the issue of the user access control. then the typical methods of access control were introduced, which include discretionary access control ( dac ), mandatory access control ( mac ), role - based access control ( rbac ), task - based access control ( tbac ), coalition - based access control ( cbac ) and relationship - driven access control ( rdac ) and so on. based on that, we provided an integrated user access control model, which was composed of rbac, tbac, rdac and cbac

    本章描述了asp和網路化製造系統的安全性問題，尤其是用戶訪問控制的問題；接著介紹了幾種浙江大學博士學位論文典型的訪問控制方法，包括強制訪問控制、任意訪問控制、基於角色的訪問控制、基於任務的訪問控制，以及基於公司關系的訪問控制、基於企業聯盟的訪問控制等;在前面描述的典型訪問控制模型基礎上，給出了一個網路化製造系統的綜合訪問控制模型，包括網路化製造系統的用戶和資源層次關系圖、訪問控制參考模型和訪問控制過程模型，並定義了各個模型中的相關元素和關系，給出了各級約束驗證和授權的表達;最後我們給出了以xacml為基礎的網路化製造系統的訪問控制描述語言。
  2. Based on the geological, stratigraphic and geochemical characteristics of the ophiolitic melange, island - arc and rift volcanic rocks from the jinshajiang zone, an archipelagic tectonic model with multi - rift and multi - subduction is proposed to explain the evolution of jinshajiang paleo - tethys. the ophiolitic melanges of the jinshajiang zone are mainly outcropped at baimangxueshan, tongduo, gongka, dongzhulin and jiyidu in the deqin county. the geochemistry of major and trace elements of the jinshajiang ophiolite shows its geochemical characteristics are similar to those of the more and island - arc volcanic rocks, but different from those of the typical n - mopjb

    金沙江蛇綠混雜巖主要分佈在德欽縣的白茫雪山、通多、共卡、東竹林和吉義獨地區，主量和微量元素地球化學特徵研究表明，金沙江蛇綠巖不具有典型n - morb的地球化學特徵，而具有介於morb和島弧之間的地球化學特徵，暗示它並非形成於寬闊的大洋環境，不是古特提斯在滇西北地區的主縫合帶，可能是古特提斯多島洋體系中的一個弧后盆地。
  3. Since piles are set into a composite foundation under an embankment it can not be directly analyzed in the plane strain way. to compute its settlement, a representative segment method is developed and used in settlement analysis of composite foundation under embankment. compared with the traditional plane strain method that needs to unreasonably suppose piles as walls, the representative segment method is more reasonable

    根據樁側摩阻力的解析解，給出了加固區壓縮量的簡化演算法；採用典型段法對復合地基沉降影響因素進行了三維有限元分析，避免了平面應變分析方法中對復合地基中樁體的不合理換算，以使計算模型在力學概念上更合理。
  4. At the meantime, the rock mass may alternate between loading and unloading and it exists in certain kind of liquid, such as surface water, unconfined water, confined water etc for its intrinsic crannies. the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security, economy, feasibility and validity. however, the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation, the corresponding structure design must ensure enough safety with all the determinate or random force combination, so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress, for the simulation of the real process and for the determinate evaluation system and optimization

    由於實際工程巖體其固有的非線性和復雜性，使得求解對應的諸如其穩定性、變形等問題面臨較大的困難，而有關的工程結構的設計必須保證該結構在外來因素的作用下具有足夠的安全度、經濟性和合理性，這必然要求對巖體及其工程結構的受力與變形有一套量化評判體系和優化技術，抓住實際工程問題的本質特徵並建立可行的符合幾何模擬、本構模擬、受力模擬、過程模擬四原則的求解模型，通過該模型的數值模擬成果來指導巖體工程的設計、施工及運營、管理；而巖體結構面的存在使得基於傳統連續介質力學理論的理論分析和數值模擬面臨巨大的挑戰，物理模擬的試驗周期和成本也大大增加，而巖土體工程問題則成為典型的數據有限、了解程度有限類問題，這類問題的解決需要綜合應用理論分析、經驗判斷、物理模擬和數值模擬等方法，數值模擬可以完成目前許多技術手段無法完成的實驗，如參數控制，復雜條件下的邊界條件的處理，同時數值模擬具有高可重復性，且數值模擬的成本和人力開銷等遠低於物理模擬，因此研究巖土體工程問題的流形元數值模擬方法是一項具有理論和實際工程應用價值的重要課題。
  5. Huize pb - zn - ge - cd deposit is a typical ore deposit occurred in sichuan - yunnan - guizhou lead - zinc metallogenic area. the enrichment coefficient of ge and cd in main ore body reaches 6978 and 3640 respectively, which shows that dispersed elements have a special geochemical behavior in this area

    會澤鉛鋅鍺鎘礦床，是川滇黔成礦三角區富分散元素鉛鋅礦床的典型代表，其主礦體中鍺、鎘的富集系數分別可達6978和3640 ，顯示了分散元素在該區有著獨特的地球化學行為。
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