A stable nanometered TiO_2 colloids were prepared from the hydrolysis of titanyl organic compounds by controlling the reaction conditions. The X-ray diffraction and scan electro microscopy ( SEM) revealed that the colloidal TiO_2 was in an anatase crystalline particle form with a diameter of 12 nm.

Eucommia ulmoides gum ( guttapercha or balata) is a crystalline particle existing in the bark and leaf of Duzhong tree ( Eucommia ulmoides Oliv), and to extract E.

在杜仲树中杜仲胶以晶体微粒的形式存在，必需用溶剂提取或机械破坏植物组织来获取。

Study on Secondary Pore in Zeolite Molecular Sieve Materials ⅰ. Secondary Pore in Crystalline Particle and Equivalent Diameter of Crystalline Particle

沸石分子筛材料中次级孔的研究&Ⅰ.晶粒内次级孔与晶粒当量直径

After sintered in 1600 ℃, nearly dense mullite with fine crystalline particle was obtained.

试样在1600℃烧结得到接近致密、晶粒尺寸均匀、细小的莫来石瓷。

Various deviation surveying, preventing and controlling systems used for continental scientific drilling and deep hole drilling in crystalline rock are collected and summed.

收集和总结了主要科学钻探项目和结晶岩深孔取心钻探项目采用的钻孔测斜、防斜和纠（造）斜系统。

The Precambrian crystalline rock series in the Yadong area is previously called "the Nyalam Group".

藏南亚东地区前寒武纪结晶岩系以往统称为“聂拉木群”。

Characteristics of saprolites formed from crystalline rock and clasolite in humid climatic regions and their development process

温湿气候区结晶岩与碎屑岩腐岩特征及其发育过程

A crystalline rock that can be cut and polished for jewelry.

一种水晶石，能切割、打磨成珠宝。

Assessment for Stability of slope in Area of Crystalline Rock at the Three Gorge Dam

三峡工程水库结晶岩区斜坡稳定性评价

Genetic type and stability evaluation of the slope in Huangling crystalline rock zone

黄陵结晶岩区斜坡成因类型及稳定性评价

Evolution of mineral under interaction of water and crystalline rock

水岩相互作用下结晶岩的矿物演化

The matrix of fine-grained crystalline material in which larger crystals are embedded.

纹理细密的水晶质矿物的基岩，其中嵌有大粒水晶。

Structure model of non-crystalline material

非晶态材料的结构模型

A natural or synthetic crystalline material having piezoelectric or semiconducting properties.

一种天然的或人造的晶体材料，具有压电性和半传导性。

Each crystalline material's atomic arrangement falls into one of six different families:

晶体材料的原子排列分为六个不同系列：

It has many merits, such as can melt repeatedly, no subcooling or crystalline humor separation phenomenon during crystalline, cheap price, non-toxic, non-corrosiveness and so on.

能反复融解、结晶而不发生过冷或晶液分离现象；价格便宜、无毒且无腐蚀性等优点。

The experimental results of continuous casting of hollow tubes showed that there were many problems such as poor surface quality, too many faults, and coarse crystalline grains in solidification structure and poor uniformity of structure in the circumferential direction.

低熔点的Sn-Pb合金空心管坯连铸模拟实验表明，连铸管坯存在表观质量差、缺陷多、凝固组织晶粒粗大且周向分布均匀性差等问题。

The maximum tensile strength of the nanocrystalline copper reached to 590 MPa, about 4.5 times of the one of the coarse crystalline copper. The maximum tensile elongation of the nanocrystalline copper reached 10%.

制备的纳米晶铜最大抗拉强度高达590MPa，是普通粗晶铜的4.5倍，纳米晶铜的最大伸长率为10%。

The coarse crystalline LC4 alloy exhibit some superplasticity under lower temperature and higher strain rate, because it can create effective recrystallization refinement.

粗晶LC4合金在较低温度和较高应变速率条件下，因能产生有效的再结晶细化，而呈现出一定的超塑性。

It was found that the overheating of material during heat treatment led to coarse crystalline grains.

结果表明：由于热加工时加热温度控制不当，使泵体过热而导致晶粒长大，强度下降。

Crystalline behavior of segmented polyester polyurethaneurea ( PUU) elastomers at different annealing conditions was studied by wide-angle X-ray diffraction ( WAXD), and crystalline morphologies of the fracture surface of these materials were investigated by scanning electron microscopy ( SEM).

用宽角X-ray衍射（WAXD）研究了嵌段聚酯脲氨酯（PUU）弹性体在不同退火条件下的结晶行为，用扫描电子显微镜（SEM）研究了这些材料断面上的结晶形态。