查询词典 grain crystal

And this paper deals with heat of hydration and shrinkage in big mass concrete because of utilizing pozzolanic effect and micro-crystal grain effect of superfine slag powder and flyash.

但是大体积混凝土因水化热在混凝土内、外产生的温差造成的温差裂缝及大体积混凝土的收缩，一直困扰着大体积混凝土的施工。

To the materials , there are rare dislocations in their crystal grains; to the unstrengthened samples, there are many dislocations which well-distributed in their grains; and to the strengthened samples, there are a large amount of dislocations scattered along their grain-boundaries, that is, the dislocations form a dislocation wall which is of great dislocation density.

又经透射电子显微镜对各种样品微观组织结构进行分析，发现其位错组态明显不同：①原材料样品中的晶粒内仅存在有非常稀疏的位错线；②未经过强化的样品中可观察到大量均匀分布的位错，分布密度相对较高；③在经过低载锻炼强化的样品中，可观察到大量的晶粒内在晶界附近聚集着一道密度很高的位错墙。

Influence of deposing condition on the grain size, crystal structure and surface properties of nano-TiO_2 was investigated; the existing position and action of TiO_2 in oil/water system was also studied. Results of photographs show that nano-TiO_2 can enter the oil/water interface and well dispersed, a solid film is formed and well stability.

3采用溶胶-凝胶法及掺杂调制技术制备了纳米TiO_2光催化剂，考察不同的热处理条件对二氧化钛(TiO_2)纳米粒子的晶粒尺寸、晶体结构、表面性质的影响，并研究了纳米TiO_2在油／水体系中的形态与存在形式，显微图像观察结果表明，TiO_2纳米粉可以进入油／水界面，在油／水体系中具有较好的分散性能和界面性质，形成一层固体膜，并且具有很强的稳定性。

That if the process can produce much liquid phase during the sintering, and which can become into completely-crystal needle-shap or aborization or bar-shap calcium ferrite instead of glass in the cooling process; if the magnetite is interweaved by the caking into the melting corrosion structure, the granular structure or the eutectic structure instead of exiling in the massive isolation; if the mount of the poreis is little, and uniformitly distributing; if the grain is little; if the organizational structure is symmetrical, all of which can improve the quality of the sintering.

另外还归纳出有利于强度提高的工艺参数和操作制度。分析工业试验和水钢现行生产的矿物组成、结构表明，水钢烧结矿以他形晶磁铁矿为主，铁酸钙为主要的粘结相，多形成熔蚀结构、粒状结构和共晶结构，强度较高；而在台车边缘和表层，由于存在较严重边缘效应和点火温度较低，使该区域的烧结矿组织结构疏松，局部呈蜂窝状或薄壁大孔状，铁酸钙较少而硅酸二钙和玻璃质较多，形成骸晶状结构和磁铁矿连晶，强度较低，致使返矿升高。

During processing, it occur as a result of the crystal grain flaking function.

微凹陷可能是原生的，也可能是后生的，在有石材加工过程中由于晶粒剥落的作用而造成。

As a consequence, lower gabbros of the oceanic crust could have a larger crystal grain size on average than that of the upper gabbros as seen from the filed observations at the Oman ophiolite.

并试图用这个结果来解释在Oman蛇绿岩套辉长岩层野外实际观测得到的结论：海洋岩石圈底部的辉长岩的结晶颗粒大小的平均值要比浅部辉长岩结晶颗粒大小的平均值高出一个数量级。

As a consequence, lower gabbros of the oceanic crust could have a larger crystal grain size on average than that of the upper gabbros as seen from the filed observations at the Oman ophiolite.Key words Computational Geodynamics Laboratory;Department of Geophysics;Peking University;Beijing 100871;China

并试图用这个结果来解释在Oman蛇绿岩套辉长岩层野外实际观测得到的结论：海洋岩石圈底部的辉长岩的结晶颗粒大小的平均值要比浅部辉长岩结晶颗粒大小的平均值高出一个数量级。

Through studying the intenerating and flowing character,the relative displacement of crystal grain of glass ceramics-ceramics composite material,the temperature field distribution law when the compound flat was heated,pressed and bent was discussed.

本文通过研究微晶玻璃-陶瓷复合材料在高温下软化流动的特征和晶粒相对位移的特点，论述了复合平板加热、加压弯曲过程中的温场分布规律，并由此制定出合理的温度制度，使复合板微晶表面和坯体在合理的温度制度、温场分布制度下同步弯曲成为所设计的曲面。

Due to the action of boron, the diamond has rough grain size, bad crystal shape and complex surface structure.

由于硼元素的存在，Ⅱb型金刚石生长所需的温度和压力条件均高于普通的Ⅰb型金刚石，并且合成出的金刚石单晶粒度较粗，晶形稍差，表面结构比较复杂。

Due to the action of boron, the diamond has rough grain size, bad crystal shape and complex surface structure.

提出了一种在高温高压下利用粉末冶金方法制备的Fe-Ni-C-B系触媒合金生长Ⅱb型金刚石的新方法由于硼元素的存在，Ⅱb型金刚石生长所需的温度和压力条件均高于普通的Ⅰb型金刚石，并且合成出的金刚石单晶粒度较粗，晶形稍差，表面结构比较复杂。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。