dry expansion 中文意思是什麼
dry expansion
解釋
干膨脹-
Three water - soluble acrylic resins are prepa red by polymerizing esters acrylate, acrylic acid ， methylacrylic acid ， esters methylacrylate with phenyl - ethene or ethylene acetate in present of water or alcohol and initiating agent. properties of the acrylic resins are characterized. results show that the resins possess excellent character, i. e. adhibity, water - solubility, expansion after dry for water ， anti acidity or bascity and brightness in the products of same type
以丙烯酸、丙烯酸酯、甲基丙烯酸、甲基丙烯酸酯等作為基料，在引發劑的存在下，以水或醇作溶劑進行聚合，加入苯乙烯、醋酸乙烯等改性，合成了3種不同的水溶性丙烯酸改性樹脂，並對其性能進行了測定.結果表明：這3種樹脂的粘度、水溶解性、乾燥后膜的吸脹性、抗酸堿性、光亮度等性能均優于同類產品 -
The influence of shrinkage - reducing agent, polypropylene fiber and expansion agent on strength and dry shrinkage of the concrete were systematically tested
系統測試了減縮劑、聚丙烯纖維和膨脹劑對砌塊材料強度和干縮性能的影響規律。 -
A meteorological condition characterized by the uniform expansion in volume of a mass of air over a region, usually accompanied by fair dry weather
輻散，散度一種天氣狀況，特徵為：在氣團均勻地散在某一地區上空，常伴有晴朗乾燥天氣 -
The product of this project has applied the latest refrigeration technology to make liquid carbon dioxide into throttling expansion to generate snow - shaped dry ice and then to compress the snow - shaped dry ice into dry ice grains with high density, which can be used for cleaning at various occasions as well as for refrigerated anti - staling
該項目產品利用最新製冷技術，使液態二氧化碳節流膨脹生成雪花狀乾冰，再將雪花狀乾冰壓縮成高密度乾冰顆粒，用於各種不同場合的清洗以及冷藏保鮮等。 -
Next was an experimental study on modification of stone ballast concrete small hollow block. the influence of polypropylene fiber, expansion agent and both of them on permeability - resistance and both moisture expansion and dry shrinkage of the block were systematically tested. the testing results and theoretical analysis slowed that they all can improve its properties, among which polypropylene fiber can most effectively restrain it ’ s moisture expansion and drying shrinkage ; however, the block doubly blended with polypropylene fiber and expansion agent will be likely to most beneficially improve crack - resistance of wall filled with the block
試驗結果和理論分析表明，單摻聚丙烯纖維、單摻膨脹劑和雙摻聚丙烯纖維與膨脹劑均能改善混凝土空心砌塊的性能，其中，聚丙烯纖維更有利於限制單個砌塊的濕漲干縮，單摻聚丙烯纖維的空心砌塊濕脹干縮的波動性最小;雙摻聚丙烯纖維與膨脹劑對限制石渣砌塊濕脹干縮的效果不理想，但雙摻砌塊將更有利增強于砌塊填充墻的整體抗裂性。 -
The influence of polypropylene fiber, expansion agent and both of them on moisture expansion and dry shrinkage of the filled wall were systematically tested. the testing results and theoretical analysis slowed that polypropylene fiber was the most beneficial to restrain it ’ s moisture expansion and drying shrinkage, however, the block doubly blended with polypropylene fiber and expansion agent can most beneficially improve crack - resistance of wall filled with the stone ballast block, at the
試驗結果和理論分析證明上述試驗結果及理論分析，即單摻聚丙烯纖維、單摻膨脹劑和雙摻聚丙烯纖維與膨脹劑均能限制混凝土空心砌塊的濕漲干縮，其中，聚丙烯纖維的限制效果最好;但是，膨脹劑的補償收縮與聚丙烯纖維的限縮聯合作用使得雙摻砌塊更有利於增強混凝土空心砌塊填充墻的整體抗裂性能。 -
Trees were traditionally cut down for firewood or cleared for agriculture. instead of clearing trees, farmers began to let them grow among their crops. at the same time, rainfall levels began to rise after a long dry period. today the rate of desert expansion in niger is dropping and the amount of harvested crops is up
樹木傳統上是被砍伐用來柴火或者被清除用做農藝上用.將清除樹木的方法所代替，農民們開始讓樹木在他們的農作物中生長.與此同時，在上時間乾旱之後，下雨量的水平開始上升.現在在尼日沙漠化擴張的速度正在下降並且豐收的農作物的數量正在上升
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