critical distance 中文意思是什麼
critical distance
解釋
極限距離-
According to the requirements of the cng on neutron flux, critical wavelength and distance between inpile guides and the cns, the relation between the source size and the critical angle of the coating material of the inpile guides as well as neutron flux at exit of the cngs have been studied
根據導管設計指標的需要，研究了冷源尺寸與堆內導管內壁鍍膜材料的全反射臨界角和導管系統出口處中子注量率的關系。 -
Thirdly, from the idea of locally linear approximate, another tangent - plane algorithm is presented for the distance between the convex nurbs surfaces. the critical step is the construction of the support mapping by gjk and lc to search for nearest points, and emphases are laid on dealing with isotropic cases and choosing initial iterated points. it is also proved that no isotropism during iteration would take place if initial iterated points are positive points
切平面法是運用gjk和lc構造支撐映射的原理而設計的一個搜索近點對的迭代法，著重給出了迷向情況的處理和初始迭代點的選取方法，並證明了只要將初始迭代點取為陽點，就不會出現迷向情況。 -
We analyzed the present situation of the concept of quality of distance education and the root of the problems. we discussed in detail the concept of quality of polybasic distance education, pointing out the critical issues that the concept needs to address in actual practice
分析了遠程教育質量觀的現狀及存在問題的根源，並對多元化遠程教育質量觀進行了較為詳細的評述，提出了多元化遠程教育質量觀在指導實際工作中需重點顧及的問題。 -
Abide by the principles of " to first realize that different ones have the same cognizance about the same terms and then to realize information sharing ", we use ontology to describe the critical terms in distance learning and to structuralize and to provide equivalence criteria, and at the same time it can effectively reduce the semantic conflicts and facilitate the interoperability among different data sources
由於教育系統的多元化，使得不同的系統對教育詞匯的定義往往產生分歧，針對這種現狀，我們本著先實現共知，后實現共享的原則，運用本體描述領域中的關鍵術語，建立領域詞匯表，為信息共享創造條件。 -
This paper combines the critical rainfall in the typical areas of yunnan province, and carries on the analysis to the critical rainfall situation, and carries on a research to the variety regulation of the critical rainfall of the mountain flood disasters in yunnan province by the application of spacial variogram theory, and the kringing of spacial gridding methods, the inverse distance to a power method, the radial basis function method, and then draws up each isoline maps
採用空間變異理論，應用克里金空間插值分析法、反距離加權插值法、徑向基函數插值法對雲南省山洪災害典型區的臨界雨量的情況進行對比分析，對其變化規律進行研究，並繪制相應等值線圖。 -
This article describes a way of special ultrasonic system which monitors thermal stress in seamless welded rails. this monitoring system is a non destructive testing system, which adopts avr mcu and high - precise time chip processing as the core of it, and adopts the critically refracted longitudinal wave as the object of measuring. my studying focuses on the theory of the monitoring system, which will be listed in this arctile : according to the snell theory, the theory of motivating of critically refracted longitudinal wave is described in details, and the finite element software is used to emulate the propagating course. the formulas of calculating the pts of swr are taken from the acoustoelasticity theory, and the calculating the parameters is introduced. according to assemble materials, three kinds of ways of monitoring the pts of swr using critically refracted longitudinal wave are described, which are measuring the sound - time in changeless distance, ultrasonic critical - angle refractomery and frequency spectrum, the first way of ways is used in this experiment system. the factors, which effect the monitoring system, are assaid in some degree based
本文的研究工作重點在無縫焊接鋼軌溫度應力測量系統的理論模塊，包括根據snell原理，研究極限折射縱波的激發機理，並使用有限元軟體ansys進行模擬;根據聲彈性理論以及公式推導出計算無縫焊接鋼軌中的溫度應力的公式，並對其中參數的求解方法進行介紹;根據收集的資料，介紹了三種使用極限折射縱波測量無縫焊接鋼軌溫度應力的方法，即固定距離測量聲時法、臨界角折射法和頻譜分析法，本實驗系統使用的是第一種;根據實驗經驗以及相關資料，分析了影響極限折射縱波測量溫度應力的幾個因素，並提出了相應的解決方法;根據實驗系統的需要，獨立設計並加工出相關配套的實驗設備，包括實驗鋼塊、有機玻璃楔塊、固定件、載荷外框裝置等。 -
The causes leading to somewhat low indicating value of the flame detector for very few burners in coal - fired utility boiler or misjudgement of the value have been analysed, and resolving measures, such as adjusting the detection distance of the flame detector, eliminating shield of vision for the flame detector, revising the critical value and background evaluation etc., being put forward
摘要分析了電站燃煤鍋爐個別燃燒器火檢指示值偏低或誤判的原因，提出了調整火檢的檢測距離，消除火檢視線遮擋，以及修改火檢的臨界值和背景值等解決措施。 -
On the basis of analyzing the collision warning algorithm for rear - end collision, this paper puts forward the conception of " the most dangerous moment " and builds up the formula of the critical safety distance between two vehicles moving on the same trace of highway in various sports states. the text has simplified and unified the algorithm for the warning system
在分析行車間距計算方法的基礎上，提出了保證交通安全的「最危險時刻」的概念，並得出了各種運動狀態下的安全跟車距離計算公式，且對報警距離演算法進行了簡化和統一。 -
It is presented that how to fix on the critical distance
提出了加固距離的確定方法。 -
The traffic zone split is studied deeply. the research regards the critical distance of medium - long distance trip as the centroid distance between the two adjoining traffic zones, and uses this critical distance as the equivalent diameter to estimate the area of the traffic zone
對快速路系統規劃的交通小區劃分進行了深入研究，提出將大城市中長距離出行的這一界定值作為相鄰兩交通小區形心之間的距離，用這一臨界距離值作為交通小區的等價直徑值來估算小區規模。 -
It plays a critical role in maintaining the students " motive for learning and ensure the quality of distance education the main factors that effect the interaction in bbs is the topic of discuss, instructor ' s active participation and guidance, etc. the responsibility of instructor in online interaction should be direct and help the learning of students, organize and encourage discussion, to be consultation and policymaker of the information and give students emotional help
解決基於bbs交互的問題要以學生、教師和機構三個方面進行，主要影響因素是討論話題的選擇，教師的積極參與和引導等。教師在交互中的角色是：學習的指導和幫助者、討論的組織和激勵者、信息的咨詢和決策者、情感的支持者。 -
Study on critical safe distance between vehiclesin traffic tunnel fire
交通隧道火災時車輛臨界安全距離的研究 -
It is found that : ( 1 ) for linear slope, redistribution of incoming energy flux in modenumber space depends on both the modenumber of incident waves and the ratio of the slope of incident wave ray to slope of topography ; both the transmitted and reflected energy flux ( only for supercritical linear slope ) focus near one or two modenumbers ; for supercritical linear slope, the energy flux scattering to higher modenumbers becomes larger and the energy flux to lower modenumbers becomes smaller as the slope of incident wave ray comes near to slope of topography ; ( 2 ) for convex slope, energy flux is redistributed in wide - range modenumbers and also show peaks on lower - modenubers and higher - modenumbers ; ( 3 ) for concave slope, energy flux is also redistributed in wide - range modenumbers, but does not show peaks on higher - modenumbers as supercritical linear slope and convex slope do ; ( 4 ) the total energy flux scattering to higher modenumbers is approximately equal to the total energy flux to lower modenumbers for internal waves propagating over both convex slope and concave slope, which means the concave slope is the same efficient to convex slope in scattering energy flux to higher modenumbers ; ( 5 ) for convex slope, the wave ray reflected from near - critical topography can extend to deep ocean and shallow shelf, while for concave slope, the wave ray reflected from near - critical topography can only extend to limited distance, then meet the topography and be reflected again ; generally the shear of the internal waves reflected twice from concave slope is not enhanced while the enhanced shear does also appear before second reflection takes place, the enhanced shear can bring about intense mixing, so internal waves reflected from concave slope can also produce marked mixing near critical slope
3 、內波在凹地形上傳播時，能通量在模態上的分佈范圍也比較寬，但與凸地形和超臨界線性斜坡地形相比，能通量在高模態上的分佈沒有明顯的峰值。 4 、從總的能通量來講，內波在凸地形和凹地形上傳播時，向高模態散射的能通量與向低模態散射的能通若十地形下內波傳播及內潮生成問題的理論解量近似相等，這意味著二者在向高模態散射能通量方面具有同等效率。 5 、凸地形上臨界點附近的反射，反射波的波射線能夠延伸到深海和陸架，凹地形上臨界點附近的反射，反射波的波射線很快遇到地形發生二次反射，一般來講二次反射后回到深海的波動其速度剪切並不很強，但是在進行二次反射之前的區域，速度剪切仍然很強，因而內波在凹地形上的反射依然能夠在地形附近區域，產生強的速度剪切區，誘發混合。 -
The content of pema affects on interplanar distance of pe / mmt composite. the content of pema increases as the interplanar distance, barrier properties and melting point of composites increased, when the critical content of pema ( wpema = 30 % ) could get exfoliated composites. the interlayer spacing of pe / mmt composites depends on content of mmt, but not the content of mmt increases as the interlayer spacing increases
同時用x射線衍射（ xrd ）衍射實驗、紅外光譜（ ir ）實驗、差熱分析試驗（ dta ） 、力學性能測試等手段，研究了採用不同的相容劑改善聚乙烯與蒙脫土之間的相容性的情況；相容劑的用量對聚乙烯/蒙脫土復合材料層間距、性能的影響；蒙脫土的含量對pe / mmt對復合體系的層間距影響；以及工藝條件對復合體系的層間距和性能的影響。 -
3. based on analysis of the dynamical mechanism of high - speed long - distance landslide, the kinematic block model of long run - out orediction for these landslides is improved, where the critical state of landslide is regarded as initial state
通過分析高速遠程滑坡的動力機制，和把滑坡的臨界穩定狀態視為初始狀態，合理地解決了滑體運動的初始條件問題，改進了描述滑坡過程的塊體運動模型。 -
The numerical results show that the appearance of focal switch rests not only on the distance of aperture and lens but also on truncation parameter ; focal switch possibly occurs only when truncation parameter is between its critical maximum and minimum truncation parameters
數值結果表明：焦開關的出現不僅與光闌透鏡分離量有關，還與截斷參數值密切相關；僅當截斷參數取某一上、下限之間的值時，才可能出現焦開關。
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