threshold stress 中文意思是什麼

threshold stress 解釋
極限應力
  • threshold : n. 1. 門檻；入口，門口。2. 【心理學】閾限。3. 界限，限度。4. 【物理學】臨界值，閾。5. 入門，開始，開端。
  • stress : n 1 壓力，壓迫，緊迫，緊張。2 【語音】重音；重讀；【詩】揚音；語勢，著重點。3 重要（性），重點，...
  1. If grazing stress reached a threshold, genetic diversity of population emerged a transition point, with genetic diversity increased

    當放牧壓力達到一個閾值時種群的遺傳多樣性有一個躍變點，遺傳多樣性又有增加的趨勢。
  2. The results show that at a given substrate temperature, there is a compressive stress threshold, below which cbn phase is thermodynamically stable and p above which hexagonal bn ( hbn ) phase is thermodynamically stable

    結果表明，在給定的襯底溫度下，存在一個壓應力閾值，壓應力低於此值時立方相是熱力學穩定相，壓應力高於此值時，六角相是熱力學穩定相。
  3. Determination method of the damage threshold stress and damage threshold strain is given, six kinds of damage variables ( which are across isotropy effectual elastic modulus damage variable, simple effectual elastic modulus damage variable, density damage variable, volume damage variable, volume density damage variable and area density damage variable ) are defined, evolution curves and evolution equations of harden yield damage are obtained

    提出了損傷應力和應變門檻值的確定方法，並定義了六種損傷變量（即橫觀各向同性有效彈性模量損傷變量，簡單有效彈性模量損傷變量，密度損傷變量，體積損傷變量，體積密度損傷變量和面積密度損傷變量） ，在此基礎上得出了硬化屈服損傷過程中的損傷演化曲線和演化方程。
  4. A developed measuring system and test method of green sand properties are introduced. by means of measuring the standard molding sand specimens, the dynamic curves of stress - strain can be quickly and accurately plotted out and several parameters, which represent the characteristics of molding sand, can be tested during the process of compressive deformation. in this brand new method of property measurement two new concepts of viscoelastic parameter and plastic deformation threshold are put forward

    介紹了一種研製的型砂性能檢測系統與測試方法，通過對標準砂樣的測試，能迅速、準確地測得砂樣受載過程中的應力應變的動態關系曲線及反映型砂本質特徵的幾項性能參數，這是型砂性能檢測領域中的新探索，其中型砂粘彈性指標及塑性變形臨界值乃是型砂性能方面的新概念。
  5. The latest experimental results of rock creep were used : the third invariant of deviator stress tensor had greater effect on creep properties ; the stress threshold of lateral creep of rock was 20 % ~ 40 % less than that of axial creep of the same rock

    文中應用了課題組近期巖石流變實驗研究的結果：應力偏量第三不變量對巖石蠕變影響顯著；巖石側向蠕變的應力閥值比軸向蠕變應力閥值低20 % ~ 40 % 。
  6. Method for determination of threshold stress intensity factors and fatigue crack growth rates in metallic materials

    金屬材料的閾限應力強度因子和疲勞裂紋增長率的測定方法
  7. The main factors affecting percolation in low permeability reservoirs include stress, threshold pressure gradient, slippage effect and water - blocking effect, which play various roles on percolation, but all will result in non - linear percolation in the end

    影響低滲氣藏滲流特徵的主要因素有應力作用、啟動壓力梯度、滑脫效應和水鎖效應等因素，並且這些因素對滲流影響各有不同，但最終均引起低滲氣藏滲流的非線性化。
  8. Once a certain threshold is reached, either through one or two very traumatic events or through chronic, high levels of stress, adults and children can begin to exhibit ptsd symptoms such as re - experience ( including flashbacks, intrusive thoughts or nightmares ), avoidance and emotional numbing, and physiological hyperarousal ( such as an elevated resting heart rate )

    一旦經受一項或兩項創傷性事件或慢性高水平應激后達到某個閾限，成人和兒童便開始出現ptsd的癥狀如再體驗（包括重現、侵入性思維或夢魘） 、迴避和情感麻木，以及生理的高覺醒狀態（如靜止時心率加快） 。
  9. Standard test method for determining a threshold stress intensity factor for environment - assisted cracking of metallic materials

    測定金屬材料環境致裂的界限應力強度因子的標準試驗方法
  10. The author ' s main contributions are outlined as following : first, the roles of hot electron and hole in dielectric breakdown of ultra - thin gate oxides have been quantitatively investigated by separately controlling the amounts of hot electron and hot hole injection using substrate hot hole ( shh ) injection method. the changes of threshold voltage have been discussed under different stress conditions

    主要研究結果如下：首先，利用襯底熱空穴（ shh ）注入技術分別控制注入到超薄柵氧化層中的熱電子和空穴的數量，定量研究了熱電子和空穴注入對超薄柵氧化層擊穿的影響，討論了不同應力條件下的閾值電壓變化。
  11. For instance, numerical simulations show that in discrete models made of interacting blocks carrying a continuous scalar stress variable, the average stress is about two thirds of the stress threshold for rupture

    例如，數字化模擬顯示，由相互作用的承載著連續梯度變化應力的地塊構成的離散模型中，平均應力大約為導致破裂應力極限的三分之二。
  12. At room temperature the compressive stress threshold is calculated to be 9. 5 gpa

    在室溫時，該壓應力閾值為9 . 5gpa 。
  13. Abstract : a laser damage facilities, which has mm size spot and operates in tem00 mode ， were achieved. in order to know the reasons of laser damage, the laser energy density was controlled near the damage threshold of the oxide thin films. according to the examined near - threshold damage morphology, the damage mechanisms of the optical coatings can be divided into two types. one was caused by melting of the coating materials, another by exploding, induced with the inner stress of the film. the plasma generated was an important reason to expand the damage area

    文摘:採用毫米量級大光斑的近單模的激光器，控制入射薄膜表面的激光能量，獲得了幾種常見單層膜和增透膜的損傷形貌，實驗結果表明，薄膜的損傷可區分為熔化型和應力型兩種，薄膜表面等離子體對損傷斑點的擴大有重要作用。
  14. Once a certain threshold is reached, either through one or two ery traumatic eents or through chronic, high leels of stress, adults and children can begin to exhibit ptsd symptoms such as re - experience ( including flashbacks, intrusie thoughts or nightmares ), aoidance and emotional numbing, and physiological hyperarousal ( such as an eleated resting heart rate )

    在一兩個創傷事件后或長期的高應激下，一旦達到某個特定的閾值，成年人和兒童都會出現創傷后精神障礙癥狀，比如重現（包括幻覺重現，強迫思維或夢魘） ，逃避，情緒麻木和過度生理反應（如靜息心率增加） 。
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