探測限界 的英文怎麼說

中文拼音 [tàncèxiànjiè]
探測限界 英文
detection threshold
  • 探 : Ⅰ動詞1 （試圖發現） try to find out; explore; sound 2 （看望） call on; visit; see 3 （向前伸出）...
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 探測 : survey; search; sound; probe; sounding; detection; acquisition; reconnaissance; localization; fin...
  • 限界 : bound
  1. 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。
  2. Probe into some problems in tunnel demarcation surveying

    隧道限界測量若干問題探討
  3. Based on laboratory and in - situ tests, the influence of initial void on the rutting - resistance, moisture damage - resistance, strength and permeability of asphalt mixt is studied, and the appropriate ranges of air void of asphalt mixtures are analyzed and suggested

    摘要在室內試驗和現場測試的基礎上，分析初始空隙率大小對瀝青混合料抗車轍能力、水穩定性、強度和滲透性能的影響，探討瀝青混合料空隙率的界限值。
  4. To meet the demand of the real teaching management in higher adult education credit system under massive education, an effective teaching management of information system which is based on the modle of c / s / s and b / s / s under the network of the internet and intranet sysytem has been talked about in this paper for the different needs on higher adult education teaching management in credit systems and designs. the states, the features, the goals and the schemes of the system have been discussed fully in this paper. the system requirements have been also analysed from all sides of the system which includes the student ' s status system, the teaching management system, the elective courses system, the examination system, the students " scores management system, the teaching material management system. the outlay system, the off - campus system, the achievement system and the web system etc. the system principles, the ways for the design and the functions in the total system design have also been demonstrated in details

    本文首先敘述了成人高等教育學分制教學管理系統的現狀、特點以及系統設計的總體方案和系統實現的目標、功能以及取得的應用推廣效果；其次，詳細論述了學籍管理、教務管理、排課管理、考試管理、成績管理、教材管理、經費管理、院系教學點辦學管理、檔案管理以及對外網站管理等的需求分析；再次，闡述了系統的總體設計原則、系統開發環境、研究方法、技術路線以及相關功能；網路數據庫的設計與實施方案、各子系統的設計、人機界面的設計、實現方面應注意的問題以及用戶權限設計的要求等；此外還介紹了舊系統數據遷移，新系統的實施工作，以及探討了對系統數據進行糾錯與清洗、測試和應用情況。
  5. Finite difference time - domain method is used to calculate the reflection for these probes and absorbing boundary condition is used to deal with the singularity in the axis of the coaxial - line in the simulation. by comparing the reflection of different probes, the best probe has been selected according to sensitive requirement. the influence of parameters : such as thickness of protective film, length of protruding inner conductor of the coaxial - line probe to the measurement has been studied

    通過時域有限差分法進行數值模擬分析，並採用吸收邊界處理同軸線軸心奇異點，計算出各種探頭測量相同溶液的反射系數，根據其測量的靈敏度，選出最優設計；並通過分析所選探頭的各種設計參數，如薄膜厚度、內導體伸出長度等的變化對測量結果的影響，找出該探頭各參數的最佳范圍，使其具有高度靈敏性，以適用於測量化學反應溶液的介電常數。
  6. The critical crack and stress put forward provides theoretic foundation for monitoring portal machine. 3. applying steady theory of board, studying the problem of early curvature, flexibility model, welding remaining stress, elastic transmutation and brace condition and so on, conclude that structure of beam is primary place where metal structure of portal crane lose stabilization and the break of main beam is result of losing partial stabilization of main board

    文章提出的界限應力和臨界裂紋對于港口機械的監測提供了理論依據； 3 、運用板的穩定理論，探索了作為薄壁構件的門機金屬結構在失穩破壞中所涉及到的初曲率問題、彈性模量問題、焊接殘余應力問題、彈塑性變形問題以及支承條件問題等，得出了門機金屬結構發生失穩破壞的主要部位為臂架結構，且主臂架的折斷是由於受壓翼板局部失穩引起整體破壞； 4 、探討了焊接對結構承載的影響。
  7. The poroelastic modulus could describe pore effect on elastic behavior of porous media such as rocks. from this, gassmann equation which was widely used in seismic exploration and petroleum logging was deduced. this equation was based on linear elasticity assumption and could be used only within low frequency

    孔隙彈性模量描述了孔隙對巖石等多孔材料的彈性性質的影響，利用其可導出在地震勘探和石油測井界應用很廣的gassamann ，該方程建立在線性彈性假設之上並僅限於低頻范圍。
  8. In the process of building and using the mass concrete structures, because of the effect of out - side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance using nondestructive testing method to test the concrete ' s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseases this dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic fem to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, researched the principles of the first - arriving waves " phase when the cracks " depths are not same, obtained the relation between the inversion point and the cracks " depth, which has the direction sense in the application of projects, the second part of this dissertation is ct, which used the ultrasonic wave running through the tested - substance to get arriving - time of the ultrasonic wave, then inverse the image this dissertation drawed one ct program which can well present the different little cells " ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested - substance, ct has the better using foreground.

    在混凝土結構的施工及使用過程中，由於受其自身及外界各種因素的影響，常常會產生一些缺陷，對結構物的承載能力和耐久性造成嚴重影響，採用無損檢測技術進行質量檢測和健康診斷，這對混凝土結構開展安全、穩定性評估以及病害隱患治理研究具有重要意義。本論文主要針對大體積混凝土結構缺陷的檢測方法展開研究工作，重點討論了超聲波法檢測混凝土結構裂縫的基本原理和方法及其特點、適用范圍，運用動力有限元數值模擬其檢測過程，探討了有裂縫缺陷的混凝土結構在脈沖荷載作用下彈性波的傳播及其變化特徵，研究了不同裂縫深度下首波相位變化規律，得出了反轉臨界點與裂縫深度之間的關系，這對實際工程應用具有指導意義。聲波ct是一種新的無損檢測技術，它是利用聲波穿透被檢測體獲取聲波接收時間，來進行計算機反演成像的技術。
  9. The sizing method based on fraunhofer diffraction is limited. because of the limitation of size parameter a ? 1 and size of photodetector, it ca n ' t measure the particles less than 5 microns accurately. to extending lower limit of measurement, inverse - fourier - transform technique is discussed

    利用夫朗和費衍射理論時對粒子的界定要求尺寸參數a 1 ，又加上光電探測元件的尺寸受到限制，故不能準確地測量5微米以下的顆粒，為此必需擴大測量下限。
  10. Several involved factors of the damage boundary problem were shown in this paper. at the same time, the fragility was researched as a import factor and the test method with which gets the displacement fragility was firstly given. moreover, this paper apply a way to solution the fragility with fea as the base of simulation analysis of damage boundary with a computer

    論文闡述了與包裝系統損壞邊界相關的幾個問題，並重點就產品易損度的確定進行了比較深入的探討，提出了測取系統位移易損度及其相關物理量試驗方法；給出了一種用有限元分析方法計算產品易損度的方法及其實現過程，從而為文中提出的計算機模擬分析法確定包裝系統損壞邊界提供了基礎。
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