temperature diffusivity 中文意思是什麼
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The detecting and measuring instrument used for detecting and measuring surface tension by means of bio - solution and sense finding methods at moving conditions is developed in order to detect and measure surface tension adsorptive ratio and diffusivity of the active substance of the alveolus surface and other life - forms. the alveolus burned by breath in the high temperature condition or damnified with serious sickness will destroy the active substance of the alveolus surface. detecting and measuring surface tension of the active substance of the alveolus surface and other life - forms can help us determine the extent of pathological changes or damnification of the alveolus or other apparatus which can produce the active substance. lt is the research problem of the modern times medicine
生物液智能表面張力動態測試儀是為測試肺泡肺液表面活性物質的表面張力、吸附率和擴散率以及其它生物液的表面張力而研製的。高溫條件下通過呼吸而燒傷肺部，或者因某些嚴重的疾病而損傷肺部都將會破壞肺部表面活性物質。通過測試肺泡或其它生物液表面活性物的表面張力，可以幫助我們測定肺泡或其它產生活性物質的器官病變損傷的程度。 -
Based on the observation data such as coads and soda, the main climatological features of the tropical indian ocean and relationships of sea surface temperature ( sst ), heat budget with ocean dynamics and thermodynamics processes are analyzed ; the seasonal and interannual variability of the tropical indian ocean are well simulated using a ocean general circulation model ; based on the thermal equation and model output data, the variation mechanism of sst and heat budget are investigated in the tropical indian ocean ; besides, the effect of seasonal variation of wind stress, ekman pumping and horizontal diffusivity on the ocean current and heat budget are studied, using both ideal model and complex model
本文根據coads 、 soda等實際觀測資料，較全面的分析了熱帶印度洋主要的氣候特點，並研究了海表面溫度（ sst ） 、熱收支與海洋動力、熱力過程的聯系；利用全球海洋環流模式較好地模擬出熱帶印度洋的季節和年際變化；基於熱力學方程和海洋環流模式輸出結果，探討了熱帶印度洋sst和北印度洋熱量收支的季節和年際變化機制，進一步揭示了海洋動力過程在北印度洋熱平衡中的重要作用；在此基礎上，利用理想化的數值試驗與數值模擬結果相結合的方式，證實了風應力的季節變化和ekman抽吸，以及水平熱量擴散系數對北印度洋海洋環流和熱收支的影響。 -
Standard test method for thermal conductivity and thermal diffusivity by modulated temperature differential scanning calorimetry
用調制溫差掃描熱量計測定導熱性和熱擴散系數的標準試驗方法 -
We give ptr ' s amplitude and phase signal of one dimension based on the theory of ptr, discuss the ptr ' s signal ' s frequency characteristic, and a method for measuring thermal diffusivity of opaque materials is introduced. then, we study on anisotropic materials " thermal conductivity, the temperature field and thermal conductivity tensor of anisotropic materials is theoretically deduced from the theory of ptr, and is proved by the experiment
從光熱輻射理論出發，推導出一維情況下ptr信號的振幅和位相表達式，討論了光熱信號的頻率特性，介紹了一種用ptr技術測量不透明材料熱擴散系數的優化方法；接著研究分析了各向異性介質受調制激光束輻照下產生的光熱信號，在理論上推導出各向異性介質的溫度場以及熱導率張量並給予一定的實驗驗證。 -
Comparing with the standard curing, curing under minus - temperature for 7 days does harm to concrete, which performance of resisting freezing - thawing cycles and chloride diffusivity decreased after the 28d standard curing
相對于標準養護，負溫養護7d會對混凝土形成損傷，轉標養28d后，混凝土的抗凍性和抗氯離子滲透性均有所下降。 -
Moreover, there are good fitted power function relationship between thermal conductivity and soil water content, soil water suction and salt concentration. meanwhile, based on the measured data of soil water content and soil temperature distribution under temperature - controlled conditions, according to philip ' s empirical equation, through difference method, the water diffusivity under temperature gradient was calculated, which can be expressed as a power function of temperature
此外，研究表明，導熱率與土壤含水率、土壤水吸力、含鹽濃度之間均存在良好的冪函數關系；在取得一定溫控條件下的土壤水分與溫度分佈實測資料的基礎上，根據philip經驗方程，通過差分法計算得出溫差作用下的水分擴散率，該參數可表示為溫度的冪函數形式。 -
Originally from green concrete and concreting in minus - temperature, the critical strength of frozen injury of minus - temperature calcium - enriched fly ash concrete and the rule of strength development are studied in this paper. through the test of resistance of freezing - thawing cycles and chloride diffusivity, the influence of curing system and calcium - enriched fly ash on the performance of concrete are studied ; and through the modern methods ( xrd, sem, and so on ), the hydration products, pore structures and microstructure are studied
本文既著眼于綠色混凝土，又致力於混凝土的負溫施工，研究了增鈣粉煤灰混凝土的抗凍臨界強度及其負溫抗壓強度發展規律;通過快凍試驗和氯離子滲透試驗，研究養護制度和增鈣粉煤灰摻合料對混凝土耐久性能的影響;並通過光學顯微鏡法、掃描電鏡和xrd等現代分析方法，研究負溫增鈣粉煤灰混凝土的水化產物、孔結構和顯微結構。 -
A two layer numerical model is given which includes vertical integration equation, momentum equation, temperature equation, and its adjoint equations to study the vertical diffusivity coefficient
本文給出了一個二層數值模式，包括全流方程、運動方程和溫度方程，建立了一個伴隨同化模式來研究垂直混合系數。
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