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- It shows that the solution viscosity drops and the relative molecular mass reduces with narrow distribution. 结果表明改性栲胶溶液黏度下降,相对分子质量降低且分布集中。
- The recent developed technology of narrow distribution ethoxylation of fattyalcohol was introduced in this paper. 本文介绍了近年来发展起来的脂肪醇窄分布乙氧基化技术。
- The results show that far-infrared ceramic powders average diameter by liquid phase codeposition method is 95.nm and narrow distribution. 结果表明,液相共沉淀法制备的远红外陶瓷粉体的平均粒度达到95纳米,且颗粒大小分布窄,而固相合成法制备的远红外陶瓷粉体颗粒粗大且不均匀。
- It was shown that the particles with small diameter and narrow distribution could be obtained at a low molar ratio of of KBH_(4) to CuS... 实验表明,硼氢化钾与硫酸铜的摩尔比较小更利于制备粒径小、粒径分布窄、团聚程度低的铜纳米颗粒。
- Lepidium meyenii Walp. (Maca), a perennial herbaceous plant with narrow distribution in the Andean region, was cultivated by local residents as early as 1600 B.C. 玛咖(Lepidium meyenii Walp.;(Maca))是南美安第斯山上分布较窄的一种多年生草本植物;早在公元前1600多年就被当地栽种。
- The results showed that backbone polymers with DPE and epoxy pendant groups, having controlled molecular weight and narrow distribution, were obtained successfully. 用IR、~1H NMR、GPC和SLS(光散射)等测试方法对其进行了详细表征，并讨论了PSLi与DPE基团的比例和主链与侧链的分子量等因素对接枝率的影响，结果表明PSLi与DPE官能团的偶联反应是定量的，可以通过调节PSLi与DPE官能团的加料比来控制接枝率。
- With very fine particle size, narrow distribution, smoothness, and remarkable hiding capability, this series contributes not only high brightness, but also perfect fine and white surface effect. 经特殊工艺制备，有较高的白度和非常好的遮盖力，表面细腻、平滑。针对不同的特性和要求又分为标准型细白银浆、丝绸型细白银浆和高亮度细白银浆三种。
- PFMnC-Br was used as macroinitiator to initiate the ATRP of t-butylmethacrylate(t-BMA), thus PFMnC-b-P(t-BMA) with narrow distribution was obtained. After hydrolyzationand acidition, the amphiphilic diblock copolymers PFMnC-b-PMAA was prepared. 并以此PFMnC-Br为大分子引发剂进行了甲基丙烯酸叔丁酯(t-BMA)的ATRP,从而制得分子质量分布较窄的嵌段共聚物PFMnC-b-P(t-BMA),水解后得到了光敏性两亲嵌段共聚物PFMnC-b-PMAA。
- The paper probes into the catalyzing effects of oxyalkyl metal compounds and lauric soap compounds on the narrow distribution with HPLC method,analyses the distribution status of ethoxylates. 对烷氧基金属化合物和月桂酸皂类化合物催化月桂醇乙氧基化窄分布作用进行了研究，用高效液相色谱分析了乙氧基化产物的分布状态。
- It is discovered that fine particles and narrow distribution can be ob-tained in combination of static mixer and stirred tank reactor,also the crystal size can be controlled easily. 加料位置对粒径分布比较敏感，桨叶底部为较合适的加料位置。采用组合反应器，不但使颗粒粒径减小，而且使颗粒分布变窄。
- Dyes are always thermosensitive materials and the key technology of dyes spray granulating is to get bigger granulars and more narrow distribution of granularities on the precondition of good quality. 染料是热敏性物料，在不破坏产品质量的前提下获得较大的颗粒和较窄的粒度分布是染料喷雾造粒的技术关键。
- Using the scalable technique of density-gradient ultracentrifugation, we have isolated narrow distributions of SWNTs in which >97% are within a 0.02-nm-diameter range. 但是限制它们应用的一个基本问题是它们的合成。
- The road is too narrow to allow the passage of gondola. 这条街太窄，大型货车不能通过。
- The average particle size of APU latex based on DMBA is larger but with narrower distribution than that based on DMPA. 以DMBA为内乳化剂制备的APU乳液粒径大而分布窄。
- The mountain path is narrow and rugged. 狭隘的山路崎岖不平。
- The travelers edged warily along the narrow road. 旅游者沿着狭窄的小路小心前行。
- However, Wenxian knobby newt are suffering from the threats of the extension of tea gardens, firewood, drought and narrowing distribution areas. 文县疣螈面临茶园扩张、薪柴、干旱和分布区狭窄的威胁。
- A chill struck into the narrow of his bones. 他感到一股寒意，透入骨髓。
- The tide flushed through this narrow inlet. 潮水涌过了狭窄的小湾。
- A gem cut in the form of a narrow rectangle. 狭长形宝石被切成细条形的宝石
