freezing and thawing 中文意思是什麼
freezing and thawing
解釋
凍融-
Meanwhile, the inhibition of trehalose for the retrogradation could be more apparent during the frequent courses of freezing and thawing, according to the analysis of the preservation condition
同時，通過對保存條件的分析，發現海藻糖在頻繁的凍融過程中更能體現出抑制回生的效果。 -
According to relative criteria, the performance of ash - jd such as ratio of water - reducing, ratio of compressive strength, effect of enhancing strength, ratio of bleeding, air entrainment content, effect of keeping slump value, compatibility with cement, resistance to concrete shrinkage and damage by freezing and thawing and impermeability to water etc are all equal to the traditional aminosulfonic - based superplasticizers, and the ratio of performance to price is better than naphthalene series superplasticizers
按照相關標準，對產品進行了測試，所開發的低成本改性氨基磺酸鹽高效減水劑ash - jd的各項性能如減水率、抗壓強度比、增強效果、引氣性、坍落度保持效果、與水泥適應性、收縮性能、抗凍融性能、抗滲性能等相當于傳統氨基磺酸鹽高效減水劑，性能價格比優于萘系高效減水劑。 -
In cold areas, concrete is always deteriorated by freezing and thawing cycle. the durability and the corrosion of concrete are directly affected by the water - saturated degree of concrete
寒冷地區凍融循環破壞往往是導致混凝土劣化的主要原因，而混凝土內部的水飽和程度又直接影響了混凝土本身的抗凍性和耐腐蝕性。 -
Numerical emulation on simultaneous soil moisture and heat transfer under freezing and thawing conditions
凍融土壤水熱遷移數值模型的建立及模擬分析 -
Based on the damage mechanics theory, during the freezing and thawing, the ct measurement technology is used to observe the water transference, ice formation, inner microdamage propagation principle and the corresponding damage structure variability
從細觀損傷力學理論出發，利用ct識別先進的試驗技術研究巖石在凍結融化過程中，水分的遷移，冰的形成，內部細觀損傷擴展機理及相應損傷結構的變化。 -
It was shown that salt expansion value of low liquid - limit clay was accumulated before the sixth freezing and thawing cycles, but the increment of salt expansion was reduced gradually with increasing cycles ; the salt expansion accumulation of low liquid - limit clay could be separated into three phases ; the deformation of clayey sand was mostly frost heave and subsidence under cycles, and collapsibility value of clayey sand was accumulated with increasing cycles ; the variation of salt expansion ratio and collapsibility ratio was a parabolic function of freezing and thawing cycles
試驗結果表明：低液限粘土前五次凍融循環過程中鹽脹具有較好累加性，隨著凍融循環次數的增加，鹽脹量增長速度逐漸降低；含砂低液限粘土的鹽脹過程可以被分為三個階段；粘土質砂在凍融循環過程中的變形主要為凍脹和沉降變形，具有較好的溶陷累加性；低液限粘土、含砂低液限粘土的鹽脹率和粘土質砂的溶陷率與凍融周期之間的關系符合二次拋物線變化規律。 -
Sparedescription : data and images on snow and ice, and their importance to the earth ' s system, such as the global annual freezing and thawing indices
描述:網站提供了大量的有關冰雪的資料和圖片，同時對冰雪在地球系統中的重要性也作了詳細地說明，如對全球嚴寒與融化系數的影響等方面。 -
Method of test for resistance of concrete to freezing and thawing
混凝土耐凍結性和耐融化性的試驗方法 -
By using the method of orthogonal table, the water binder ratio, air content and mineral admixtures which affect the saturation degree are analyzed in this paper. meanwhile in freezing and thawing cycle circumstance including water environment and 3. 5 % nacl liquor, the saturation degree and the saturation rate are also analyzed. moisture content of the concrete is different by varying water pressure
本文採用正交分析方法，研究了自然飽水和壓力飽水條件下水膠比、含氣量和摻合料三個因素對混凝土飽和系數的影響規律，並研究了混凝土在純水和3 . 5 % nacl溶液中受凍后飽和系數的變化規律。 -
Cryomicroscope is an important tool in the research of low temperature biology and medicine. with the help of cryomicroscope, the dynamic, micron - scale, visual investigation of freezing and thawing processes in living tissues and individual cells can be carried out. in this paper, principles of low temperature biology and medicine are briefly introduced
人們可以藉助這一技術觀察到生物樣品在冷凍和復溫過程中的形態變化，以及溶液相變的過程，從而分析生物材料的相關特性，並以此為依據客觀的解釋實驗結果、修正理論模型和制定合理的治療或保存程序。 -
By testing according to correlation criterions, the performances of jd such as ratio of water - reducing, ratio of compressive strcngth, effect of accelerating and enhancing strength, ratio of bleeding, air entrainment content, effect of keeping slump value, compatibility with cement, resistance to concrete shrinkage and damage by freezing and thawing and water - tightness etc are all better than that of the traditional melamine resin superplasticizer sm and naphthalene series superplasticizer fdn
按照相關標準進行測試，所開發的改性密胺樹脂高效減水劑的各種性能如減水率、抗壓強度比、早強增強效果、泌水率、引氣性、坍落度保持效果、與水泥適應性、收縮性能、抗凍融性能、抗滲性能等都遠遠優于傳統的三聚氰胺高效減水劑sm ，也優于萘系高效減水劑fdn 。 -
Test for thermal and weathering properties of aggregates - part 1 : determination of resistance to freezing and thawing
集料的熱性能和氣候老化性能試驗.第1部分:耐凍性和耐解凍性測定 -
In the area of seasonal frozen region, the road takes place the cycle of freezing and thawing variety with the season, the mainly disease harm generating from this is the frost heave and frost boiling etc. . the disease harm belongs to the heat transfer problem, but the effective measure to prevent and cure the frost boiling has something to do with the gradient of temperature and humidity
在季節性凍土地區，道路隨季節交替發生凍融循環變化，由此產生的病害主要是凍脹和翻漿等。病害的形成歸根結底屬于熱質遷移問題，而防治凍脹與翻漿的有效措施無不與溫度和濕度有關，搞清冬季凍結過程道路結構體系溫度、濕度及應力的狀況，是正確設計路基路面，防治凍脹和翻漿的先決條件。 -
The products belong to microbial agents, to room temperature preservation, no repeated freezing and thawing
本產品屬于微生物制劑，需常溫保存，嚴禁反復凍融。 -
( 2 ) because of t he variability of rock subjected to outside action, three new conceptions : postive damage basic damage and negative damage, are suggested, which can deal with the condition that rock density became large. ( 3 ) the present damage variables based on ct number mostly include ct average number of the rock without damage, which is difficult to measure, so a new damage variable, which includes the average ct number is proposed, on the other hand, strain equal theory is generalized because the one put foreword by lemaitre is not good enough to use. ( 4 ) a axial damage constitutive equation is proposed and testified. ( 5 ) with the circle times, the damage propagation laws of two different rocks, subjected to circle of freezing and thawing, are studied, and in the analysis process, traditional analysis method including average ct number and is used, some important conclusions are reached : inner damage of soft rock containing a large mount of apertures is largely propagating with the time increasement of circle, however, at the preliminary time, the hard rock containing a small mount of aperture is a little propagating, at late time, the influence become large ; ( 6 ) zone separation and statistics frequency put forward is used to analysized the three different damage propagation in the open circumstance, when they are subjected to the different circle times of freezing and thawing, in which the temperature variability is linear, different freezing rate, and different freezing temperature, and no water is supplied during the test
在研究過程中本文主要做了以下工作： （ 1 ）針對巖石損傷變化較小時，運用ct均值和方差分析不方便的缺陷，本文提出運用對ct數范圍劃分區段的方法，根據各區段統計頻率的變化規律來分析損傷擴展狀況； （ 2 ）針對巖石受到外部作用的多變性，本文提出了基準損傷，正損傷，負損傷的概念，在某種程度上考慮了巖石受到外部作用時的壓密情況； （ 3 ）現有的基於ct數的損傷變量大多需要用到巖石基體的ct均值，這實際上是很難觀測到的，因此本文建議了一個可運用巖石初始狀態ct均值的損傷變量，由於現有的勒邁特教授應變等價原理使用上的不便，本文在其基礎上進行了推廣； （ 4 ）建議了一個可用巖石初始狀態ct數和彈性模量的單軸損傷本構方程，並用算例進行了驗證； （ 5 ）對兩種不同巖石在開放環境下受到凍融循環作用且融化過程中補水時，內部損傷隨凍融循環次數增加的擴展規律進行了探討，主要運用了常規的ct均值和ct方差的分析方法進行分析，試驗發現：對于孔隙率和含水率較高，密度和強度較低的軟弱巖石，凍融循環次數對損傷結構的擴展有明顯的影響，而對于孔隙率和含水率較低，密度和強度較高的硬巖，凍融循環次數對其損傷結構擴展初期由於含水率低的原因，影響不是太大，而後期由於水補給后，含水率較高的原因，凍融影響逐漸增大； （ 6 ）運用了本文提出的區段劃分和統計頻率的方法，深入地分析了開放環境下的線性溫度變化的凍融循環次數，凍結溫度，凍結速度不同巖石作用時，其內部損傷隨凍融循環次數，凍結速度和凍結溫度變化的擴展規律，需要指出的是除了在試驗前飽水外，凍融過程中沒有補水。 -
The result indicated that, mix the mineral mixture of fly ash, flag into concrete can optimize the concrete pore structure, improve the concrete compressive strength and impermeability, and along with the age increment the improvement become more obviously ; after saturated freezing and thawing, the concrete pore structure changed apparently, total porosity increased, macro porous quantity rapid increased, small pore quantity reduced, mean radius and most probable aperture increased ; and the more saturated degree, the more obviously destructive effect
研究表明:在混凝土中摻加粉煤灰、礦渣等礦物摻合料優化了混凝土的孔結構，提高了混凝土的抗壓強度和抗滲性能，且隨齡期的延長這種改善作用更加明顯;飽水凍融后混凝土的孔結構變化明顯，總孔隙率增加，大孔數量急劇增大，小孔數量減小，平均孔徑和最可幾孔徑增大;且飽水程度越大，這種破壞作用越明顯。 -
The result shows that the strength of rock evidently reduces with the increase of number of freezing and thawing cycle
此外也分析了巖石邊坡侵蝕過程的機理及影響因素，隨著凍融次數的增加，巖石的抗壓強度顯著降低。 -
Test methods for frost resistance of exterior wall materials of buildings freezing and thawing method
建築物外壁材料的耐霜凍性試驗方法 -
Standard test method for resistance of concrete to rapid freezing and thawing
混凝土耐快速凍融的標準試驗方法 -
Resistance to freezing and thawing
抗凍融性39
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