查询词典 crystallization

The nuclei density at the surface of carbon fiber is much higher than that in the bulk area, and the resulting radial growth produces a type of transcrystalline structure, and the characteristic temperature of crystallization increases with carbon f...

结晶动力学表明：结晶生长本质仍是球晶机理，促进聚丙烯结晶的原因是碳纤维使结晶过程的表面自由能降低。

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

以四氢吡咯为原料，先与氯乙酰氯成酰胺，再与哌嗪发生取代反应制得中间体［（1-四氢吡咯基）甲基］哌嗪(2)；化合物2与氯乙酰氯和三苯基膦反应，经异丙醇重结晶得到稳定的有机鏻盐(3)；化合物3与3，4，5-三甲氧基苯甲醛发生Wittig反应，再与马来酸成盐得目标化合物马来酸桂哌齐特(1)。

In earlier studies, major classes of triacylglycerols were separated on the basis of unsaturation (i, e., trisaturated, disaturated, diunsaturated, and triunsaturated ) via fractional crystallization and oxidation-isolation methods.

早期的研究，在研究不饱和现象的基础上，通过分级结晶和氧化-分离方法，将三酰基甘油分为几类(如三饱和酸、二饱和酸、二不饱和酸和三不饱和酸)。

The temperature for crystallization obtained by differential scanning calorimetry is 193.92 ℃. The undeposited AgInSbTe is amorphous by the measurement of X-ray diffraction, while the phase change film is heated at 200 ℃, the peak could be observed by XRD, which indicated that the amorphous state had become a crystalline state.

示差扫描量热实验测定的结晶峰温度为193.92 ℃。X射线衍射表明未经热处理的沉积态薄膜是非晶态，而经过200 ℃热处理，X射线衍射图出现衍射峰，薄膜从非晶态转变到晶态。

Crystallization behavior of undrawn and hot drawm PET film with random orientation in chain segments and high orientation in the global sense has been compared using SAXS and WAXD.

采用小角和广角X-散射法比较了未拉和热拉PET膜在结晶性能方面的差别，热拉试样在分子链段的小尺度范围内基本上是无规取向，而在分子链的大尺度范围内却是高度取向的。

Parasitism and wedging-form of crystals, which often appear at regions with stress concentration and crystal defect, showed that stress, brought on by unequilibrated crystallization, existed on crystal-melt interface.

楔化、寄生晶容易在晶体应力较大的部分和缺陷处出现，楔化、寄生晶的出现反映出熔体的结晶过程处于非平衡状态，引起晶—液界面处的较大应力。

In this paper, Nucleating agent and uniaxially orientaion were studied to the crystallization of Polylactic acid.

本论文主要研究了成核剂对聚乳酸结晶的影响和取向条件对PLA制品晶型及性能的影响。

The cold crystallization of uniaxially oriented PET fibers was investigated. The preferred condition for preparation of uniaxially oriented amorphous PET fibers was explored in terms of the draw ratio of as-spun PET fibers at different temperatures.

研究了单轴取向PET纤维的冷结晶过程，对出现的多重结晶峰进行了参数解析，得到了Avrami指数、结晶扩散活化能等结晶动力学参数。

It includes two co-satured points, five univariant curves and four crystallization regions corresponding to NaCl,〓,〓, and 〓. It is important to investigate the phase diagrams for designing and optimizing the preparing process of the PSC adduct.

该四元体系及其三元子体系的相平衡研究，为Na〓SO〓制备〓合成工艺条件的确定和产物的分离提供了相平衡理论依据，为硫酸钠资源的综合利用提供了新的思路，具有重要的实用价值和学术意义。

The metastable phase equilibrium of the quaternary system Na(superscript +)∥Cl(superscript -), CO3(superscript 2-), B4O7(superscript 2-)-H2O was studied at 273 K by isothermal evaporation method, the solubility and density of the equilibrium solution of this system were determined and the metastable equilibrium phase diagram was plotted in line with the experimental data. The phase diagram of the system consists of three univariant curves, three crystallization fields and one invariant point.

采用等温蒸发法研究简单四元体系Na∥Cl，CO3(上标 2-)，B4O7(上标 2-)-H2O273K时的介稳相平衡，并测定该体系273K平衡液相中各组分的溶解度及密度，该体系的介稳相图和密度组成图显示：该四元体系在273K时的相图由3条溶解度单变量线、3个结晶区及1个共饱和点组成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。