支化 的英文怎麼說

中文拼音 [zhīhuà]
支化 英文
branching
  • 支 : Ⅰ名詞1 （分支; 支派） branch; offshoot 2 （地支） the twelve earthly branches3 （姓氏） a surname...
  1. Finally, the key link of engineering design reuse, which supports the reuse of the structuralizeation of designing knowledge and of the abstractive scheme, was approached

    探討了工程設計重用關鍵環節支持重用的設計知識結構化、抽象方案。
  2. And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the

    研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。
  3. The crystallization and melting behavior of mellocene - catalized branched and linear polyethylenes of low molecular weight was studied. it was found that the crystalline lattice of branched polyethylene is larger than that of linear polyethylene because of the existence of branched chains. the melting behavior of branched polyethylene is similar to that of linear polyethylene since the branched chains can not enter the lattice. however, the crystalline behavior of low molecular weight branched polyethylene is the same as that of high molecular weight linear polyethylene, but different with that of low molecular weigh linear polyethylene. kinetics theory analysis evidenced that the transition temperature of growth regime of the branched polyethylene is about 20 lower than that of linear polyethylene with the same molecular weight. it may be attributed to the existence of short branched chains

    研究了金屬茂催化的低分子量支化聚乙烯和線性聚乙烯的結晶及熔融行為，發現支化聚乙烯的結構與線性聚乙烯相同為正交結構，但晶格略有膨脹.支鏈的存在對熔融行為影響不大，兩種聚乙烯的熔點均隨結晶溫度的升高而非線性增加，表現出低分子量樣品的共同特徵.但支鏈的存在對結晶行為卻有很大的影響，主要是由於支鏈的存在降低了晶體的結晶速率從而影響結晶過程，使得低分子量的支化聚乙烯的結晶行為與高分子量線性聚乙烯的結晶行為相似而與低分子量的線性聚乙烯不同.動力學分析表明，低分子量的支化聚乙烯的結晶生長方式的轉變溫度比同等分子量的線性聚乙烯降低了約20
  4. In part 3, the in - situ copolymerization of ethylene was investigated by the combinations of the cobalt - based catalyst and the metallocene to prepare short - branched polyethylene. the major oligomers catalyzed by the cobalt - based catalyst 5, 6 and 7 werel - butene, and the minor were 1 - hexene. the comonomer effects were also observed

    在雙亞胺基吡啶鈷配合物與茂金屬復配催化乙烯原位共聚制備短支鏈支化聚乙烯中，合成了3種雙亞胺基吡啶鈷配合物，研究了反應條件對其催化乙烯齊聚活性和所得產物碳數分佈的影響。
  5. Synthesis and electrochemical performances of novel hyperbranched polymer electrolytes

    新型超支化聚合物電解質的合成及電化學性能研究
  6. Recent progress of hyperbranched polymers in synthesis and application are reviewed is this paper

    綜述了近幾年國內外高支化聚合物的研究進展及其應用前景。
  7. Synthesis of aromatic hyperbranched polyesters

    芳香族超支化聚酯的合成
  8. And some methods for improving their poor solubility are introduced, including : incorporating bulky groups, hydrophilic groups, water soluble polymers and hyper - branched dendrimers ; synthesizing branched derivatives ; and degrading them into oligosaccharide

    對其解決的方法進行了分析總結：將體積較大的側基或親水性基團大分子引入到分子鏈上，支鏈化或鍵接超支化合物，以及低聚糖化，以滿足不同應用領域特別是生物醫學工程的要求。
  9. Development of polymer brushes

    超支化聚合物的研究進展
  10. Structure determination of high - branched ester plasticizer

    高支化度酯類增塑劑的結構鑒定
  11. Improvement in hyperbranched polyglycidol hydroxyl groups ' conversion by protection method

    保護法提高超支化聚縮水甘油的羥基反應率
  12. Synthesis and curing of acrylate terminated hyperbranched polyester

    端丙烯酸酯基超支化聚酯的合成及固化反應性能
  13. According to this, we have deduced that branching reaction must have been happened during the polymerization which has been caused by chain transfer at high conversion rate

    說明聚合反應中發生了鏈的支化反應，這是由於高轉化率時，大分子發生鏈轉移所引起的。
  14. Branched high polymer

    支化聚合物
  15. Studies on ticl4 ni 2 l supported complex catalysts for ethylene polymerization to produce branched polyethylene

    配體復合催化劑催化乙烯聚合制備支化聚乙烯的研究
  16. Those metallocene branched polyethylene exceed all others in basic properties with processing properties being close to the general polyethylene

    開發的茂金屬支化聚乙烯基本性能優于通用聚乙烯，而加工性能接近通用聚乙烯。
  17. The application experiment data show that metallocene branched polyethylene prepared by the new method are applicable to tubing and large - scale hollow container

    應用試驗表明，開發的茂金屬支化聚乙烯可用於製造管材和大型中空容器。
  18. Metallocene branched polyethylenes prepared by oligomerization catalysts at different ratio vary in physical properties, and the ratio of cocatalyst to oligomerization catalyst of 8. 72 : 1 gives good physical properties and processing properties

    以不同配比齊聚共聚催化劑聚合的茂金屬支化聚乙烯的基本物性不同，當共聚齊聚催化劑配比為8 . 72 : 1時，基本性能和加工性能較好。
  19. Basic properties of various polyethylene polymerized by metallocene catalysts and various branched polyethylene polymerized by oligomerization cocatalysts were researched, and the results show that metallocene branched polyethylene polymerized by oligomerization cocatalysts have high molecular weight, broad molecular weight distribution, and good tensile properties compared to metallocene - based polyethylenes prepared using mono - metallocene and bi - metallocene catalysts

    摘要研究了不同茂金屬催化劑聚合的茂金屬聚乙烯及不同齊聚共聚催化劑聚合的茂金屬支化聚乙烯的基本性能，結果表明：以齊聚共聚催化劑體系的茂金屬支化聚乙烯比以單、雙茂金屬催化劑的茂金屬聚乙烯相對分子質量高、相對分子質量分佈寬，拉伸性能優良。
  20. As new kinds of non - linear polymers, dendritic polymers have formed a promising kind of functional materials and have been successively used in various applications due to their characteristics including low viscosity, better solubility in conventional solvents, and nano - dimension of single molecule

    摘要樹形聚合物高度支化，與線形結構的聚合物相比具有較低的粘度及良好的溶解性，而且其單分子尺寸通常在納米尺度，在多方面具有廣闊的應用前景。
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