major shrinkage 中文意思是什麼
major shrinkage
解釋
開口縮孔-
The article analyze the concrete drying shrinkage mechanism, find the major factors of affecting the drying shrinkage, analyze the lack of shrinkage reducing agent, who be of low molecular weight and line chain, design a new shrinkage reducing agent ? ? shrinkage reducing agent of poly - acrylate. the shrinkage reducing agent of poly - acrylate is mainly composed of crylic acid 、 cinnamene 、 poly - glycol 、 solicitating agent 、 chain transferring agent and activator, which come by these processes of polymerization 、 esterifing and neutralization to form a pectinate polymer, which have a high molecular weight and many poly - oxidative alkenes
論文分析了混凝土乾燥收縮的機理，確定了影響乾燥收縮的關鍵因素，分析已有低分子量的、直鏈型減縮劑的不足，設計了一種新型的減縮劑? ?聚丙烯酸鹽類減縮劑，其主要由丙烯酸、苯乙烯、聚乙二醇、引發劑、鏈轉移劑、催化劑等經過聚合、酯化和中和反應，生成一種高分子量的、含聚氧化烯鏈的聚合物。 -
The mechanisms of such treatment have been proposed as inhibition of proliferation and angiogenesis, as well as induction of differentiation and apoptosis, as has been tested by various in vivo and in vitro experiments. in our experiments, it has also been demonstrated that after the treatment of arsenic trioxide, the k562 cells has undergone major morphological changes, which included nuclear shrinkage, membrane bleb and scattered apoptotic bodies. dna gel electrophoresis also discovered that the typical " dna ladder " phenomena in the treatment group, while the control group showed the regular genomic banding
我們在實驗中觀察到as _ 2o _ 3作用人紅白血病k562細胞后，細胞生長明顯變緩，部分細胞出現皺縮、染色質濃聚及胞膜起泡現象，部分細胞胞膜破裂，在其周圍有緻密的凋亡小體出現， dna電泳出現典型的凋亡「梯狀」帶，提示as _ 2o _ 3能有效抑制k562細胞生長，誘導k562細胞凋亡。 -
Lwac is becoming one of the important trends in the development of modern concrete. to solve the problems such as poor workability, large shrinkage value and crack easily of lwac, on the basis of systematic experiments, the author establishes lwac workability evaluation system and advances the testing method of pumping performance of lwac ; the control technology of discrete of lwac is introduced through analyzing structure formation process and establishing the mathematic model ; based on studying the strength source of lwac and the function mechanism of artificial additive, this paper not only confirms some major factors which affect concrete strength but explores the preparation technology route of high strength lwac ; the different effects of several fibers in lwac have been studied, and the fiber is introduced in pumping lwac to improve its crack - proof performance
本文針對輕集料混凝土工作性能差、收縮變形大、易於開裂等問題，根據大量實驗建立了高強輕集料混凝土工作性能的評價體系，提出了高強輕集料混凝土可泵性的測試方法；通過分析輕集料混凝土的結構形成過程，建立了輕集料混凝土拌和物物料運動的數學模型，提出了防止輕集料混凝土分層離析的技術措施；通過對輕集料混凝土強度來源和礦物摻合料的作用機理的深入研究，確定了影響輕集料混凝土強度因素的主次關系，提出了配製高強輕集料混凝土的技術路線；研究了纖維在輕集料混凝土中的增強增韌、減少收縮的作用機理。
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