freezing mechanism 中文意思是什麼

freezing mechanism 解釋
凝固機理
  • freezing : adj 1 凝凍的,極冷的。2 使人打冷顫的;極冷淡的。3 結冰的;冷凍用的。adv 冷凍一樣的。 be freezing ...
  • mechanism : n 1 (機械)結構;機械裝置[作用];(故事的)結構。2 【哲學】機械論 (opp vitalism)。 3 【文藝】...
  1. This paper unfolds engineering disposition and theoretical research of negative temperature high performance concrete ( nthpc ) with the damage of many factors motivation, the project background based on qing - zang railway engineering, which is one of four - emphasized engineering during the tenth five - plan. due to the difference of environment of construction and service between nthpc and ordinary concrete, and therefore durability of nthpc is required to higher level. at a first, nthpc must avoid frozen damage at early age and possess anti - freezing property at later period, in order to meet engineering practicable application need, and this are two emphasized and difficult problems, as for nthpc ; by means of mechanism analysis about deicing - agent ingredient and anti - freezing at early period, adopting composite technique routine of mineral addition + anti - freezing element + water - reducer4 - air - entraining + anti - erosion of steel component etc, based on orthogonal experimental approach, fd - 1 composite functional admixtu re was manufactured, which has more property and orientation on qing - zang railway

    負溫混凝土由於和普通混凝土在施工環境及服役環境上存在的差異,因此表現為比普通混凝土更為較高的耐久性要求;負溫混凝土首先要避免早期的凍害以及具備長期抗凍性能,才能夠滿足工程實際應用的要求,這也是負溫混凝土必須解決的兩大技術關鍵;通過對目前常用防凍劑組分作用機理的分析研究及混凝土早期防凍機理探討,採用礦物外加劑+防凍組分+高效減水劑+引氣+阻銹組分功能復合的技術路線,通過正交試驗設計復配了適應青藏鐵路工程要求的專用多功能復合型外加劑fd - 1 ;並在此基礎上配製不同等級負溫高性能混凝土,開展一系列包括硫酸鹽侵蝕、氯離子滲透、抗凍融循環、收縮及耐磨性等耐久性能研究;通過對fd - 1組分和摻量的調整,優化負溫混凝土在施工特性、力學指標和耐久性三個方面的兼容、協調性。
  2. The compatibility and harmony among workability, mechanical grade and durability are optimized, with the ground of adjusting composition and dosage of fd - 1 ; after analyzing anti - freezing damage mechanism, it is concluded that temperature is main factor, which affects structure and property of concrete. after two processes of temperature - elevation of hydration heat and temperature - descent of cold - environment, there is original damage in concrete and its existence leads to temperature fields, as results in temperature damage on transition phase > aggregate and cement mortar of concrete

    通過對負溫混凝土早期防凍分析研究認為,環境溫度對混凝土的結構形成及其性能的影響十分突出,水泥水化溫升和環境散熱降溫兩個過程導致混凝土結構內部產生不均勻溫度場,對過渡相、水泥砂漿以及骨料都能產生不同程度的溫度損傷,產生內部溫差應力裂紋,初始損傷也是不可避免的。
  3. Study on mechanism of decreasing wood collapse by pre - freezing

    預凍處理減少木材皺縮的研究
  4. In this paper, it is proposed as a new mechanism that when a solidifying billet is in the stirring zone during continuous casting of steel, a thin steel shell is formed in front of the freezing interface, which results in a white band with a negative segregation followed by a positive one

    作者提出了一個新的機制來解釋白亮帶的形成原因,即正在凝固的連鑄鋼坯位於攪拌區時,在凝固前沿形成一個薄殼,由此導致先發生負偏析,緊隨其後又發生正偏析的白亮帶。
  5. Freezing mechanism of concrete and winter construction control

    混凝土受凍機理及冬季施工控制
  6. This paper analyzes on some factors influencing the water accumulation during the soil freezing process, probes into the mechanism of the water and salt migration during the process of water accumulation, and points out that the water accumulation of frozen zone provides the effect of water and salt migration for the hibernating propagation of the forest in the seasons of winter and spring

    分析了土壤凍結過程中水分積聚的影響因素,探討了水分積聚過程中水鹽遷移的機理,指出凍結帶水分積聚為冬春季林木越冬繁衍提供了水分,同時鹽分也隨水分遷移到地表。
  7. According to the production practice to produced - 35 ( superscript # ) diesel fuels with added low temperature fluidity improver through the years, the effect of the different low freezing diesel composition on susceptibility of low temperature fluidity improver are described, and their mechanism is discussed

    摘要根據多年來採用加入低溫流動性改進劑生產- 35號低凝柴油的生產實踐,闡述了不同的柴油組分對柴油低溫流動性改進劑感受性的影響,並對其原理進行了探討。
  8. The mechanism of water movement in the freezing - thawing process

    凍融過程中水分運移機理
  9. Freezing efficiency of f atom in oxidant nozzle of different contour walls, mixing mechanism of reactants in 2slot ( two - dimensional, plane symmetry nozzle ) nozzle and comparison of flow - fields & ssg between 2slot and 3slot ( 3 - slit jet plane nozzle ) have been studied by using 2d cr program. the conclusion is significant to understand the requirement of reactant flows and to generate ideas for nozzles design

    利用二維r程序,研究了單噴管型面對f原子凍結效率等參數的影響:研究了二維平面對稱噴管( 2slo )的反應流混合機制和混合角對激光器性能的影響;對比研究了zslot和三狹縫平面對稱噴管oslot )流場和增益特徵。
  10. Research on mechanism of soil moisture migration under freezing and thawing condition

    凍融條件下封閉體系中土壤水分運移規律模擬研究
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