查询词典 eucryptite

Finally, a reasonable composition and synthesis technology of β-eucryptite glass-ceramics have been put forward.

最后总结出了一套合理的微晶玻璃配方和制备工艺。

This paper details the properties and characteristics of the β-eucryptite glass-ceramics with negative CTE (Coefficient of Thermal Expansion) that have been developed to bond to substrates for compensating the thermal variations in fiber Bragg gratings.

本论文以研发能够应用于光纤布拉格光栅温度补偿的材料为目的，开展了负膨胀β-锂霞石微晶玻璃的制备与表征。

Most materials have positive thermal expansion .β-eucryptite Li2O.

摘要 自然界中材料几乎为热胀冷缩的特性。

This β-eucryptite phase begins to dissolve at 1320℃ or above where the tielite (Al2TiO5) is apparently unstable and decomposed to corundum (Al2O3) and rutile (TiO2). Thirdly, in this dissertation, the influence of composition, crystallization temperature, and time on CTE were investigated detailedly.

然后，对制得微晶玻璃材料的热膨胀性能及力学性能与材料组成的关系，成核剂对玻璃析晶性能和膨胀系数的影响，以及晶化温度和时间的关系进行了分析。

Then,the research progress of high SiC paniculate volume content aluminum matrix composites and aluminum matrix composites reinforced with eucryptite ,with zirconium tungstate and with quasicrystalline particles are reviewed respectively.

综述了低热膨胀铝基复合材料的研究现状，对高体积分数 SiC 颗粒增强铝基复合材料、锂霞石颗粒增强铝基复合材料、钨酸锆颗粒增强铝基复合材料和准晶颗粒增强铝基复合材料的研究状况进行了详细的阐述。

And by mean of DTA, XRD, SEM techniques, the research work emphasized on the crystal phases structure, thermal expansion, and mechanics capability of the β-eucryptite glass-ceramics.

通过DTA、XRD、SEM等研究手段，对β-锂霞石负膨胀微晶玻璃析晶性能、显微结构、热膨胀性能及力学性能等问题开展了较深入的研究。

In the source, lithium ions are extracted from a heated emitter (β- Eucryptite), focused by a electrostatic lens, and neutralized in a charge -exchange cell by sodium atoms.

它是从锂霞石热发射体上引出离子，经静电透镜聚焦，在中和室与钠原子进行电荷交换，通过离子偏转最后获得中性束。

The main objective of this thesis is to investigate the formation and properties of negative thermal expansion glass-ceramics containing β-eucryptite. The effects of composition modification (SiO2 content, the kinds and amount of nucleation agents, excess Li2O) on CTE were also examined.

在锂铝矽酸盐(lithium aluminosilicate，Li2O-Al2O3-SiO2，简称LAS)系统中的固溶体β–eucryptite相具有负热膨胀系数，其与正膨胀性的精密元件复合，可藉由应力补偿，控制该元件的尺寸变化，以防性质变异。

Because of strong thermal expansion mismatch between the glass matrix and β-eucryptite phase in NEGC, the micro structure of the glass - ceramics changed (e.g. formation of microcracks) with the variation of temperature environmental,resulting in thermal hysteresis.

因锂铝矽酸盐负热膨胀系数玻璃陶瓷中之玻璃母相与β–eucryptite相之热失配效应过大，导致基材於升降温过程结构改变，所引发的热迟滞现象十分显著，其间接影响热补偿元件应用寿命，故本实验另一研究为观察此基材中迟滞现象的变化。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。