定形

During the process of peptization and hydrothermal crystallization, the aggregation behavior and the resulting morphology of nanocrystalline titania (TiO2) were studied by X-ray diffraction, scanning electron microscope, and dynamic light scattering techniques.

通过XRD、SEM和动态光散射粒度测定仪研究了胶溶及水热晶化过程中纳米TiO2晶粒聚集行为及形貌。实验结果表明，在胶溶无定形沉淀过程中所形成的大小为10-15nm的锐钛矿型胶粒或金红石型胶粒易定向聚集成更大的、具有(30-50)nm×(80-100)nm的次级晶粒。含有次级晶粒的溶胶前驱液在水热晶化过程中，次级晶粒发生崩裂并生长成结晶度更高的大小约为10-30nm球形和大小约为20-60nm棒状纳米TiO2

In the titania-modified MCM-41, although the titania were in an amorphous state and in tetrahedral coordination rather than octahedral coordiantion, which exsists extensively in crystalline titania, they exhibited relative high photocatalytic activity for the photodecomposition of phenol.

所合成的无定形的氧化钛修饰MCM-41的光催化剂显示了较高的催化活性。

The process and requirement of manufacture of high count and density poplin with sanding effect were introduced.

介绍了生产高支高密磨毛府绸的工艺流程和质量要求，诸如翻缝、退煮合一、漂白、定形、丝光、磨毛、洗毛、染色和防雨整理的处方及操作事项等。

Water, despite its protean appearance, has a lot of internal structure, particularly when it is cool.

尽管水无有定形，但却具有许多内部结构，当其冷却时则尤为明显。

The results show that,beside amorphous carbon,in the structure of expanding carbonaceous char,there is also titanium pyrophosphate which plays an important role in the fire proof function of intumescent coating.

研究结果表明：在膨胀炭质层中，除存在无定形炭以外，还存在一种对基材的防火起较大作用的化合物——焦磷酸钛。

In a few hours the amorphous sulfur reverts to small rhombic crystals and its rubbery property disappears.

过上几个小时无定形硫就会转变成结晶的单斜硫，它的弹性也会消失。

"Sometimes you have to wait for your face to settle," Rickman says. They seem to think that now my face is not going to get any better and that it's probably not going to get any worse.

"有时候你必须等到自己的脸定形，"，Rickman说，他们现在似乎认为我的脸既不会变得更好看，而且也不太可能会变糟了。

The membranes were transformed from amorphous phase toα-Al_2O_3 crystalline phase by 5 hours annealing at 800℃and 910℃. At the same time, aluminum and amorphous alumina were found by XRD patterns. The membrane had little change in front side after 5 hours annealing at 800℃, while the back side was transformed from ruleless distributing to cluster distributing.

膜在800℃及910℃下退火5h后，由非晶态的氧化铝转变成为晶态的α-Al_2O_3，但同时也有铝单质和无定形结构的氧化铝存在，膜在800℃下退火5h后的正面没有太大变化，背面由无规则的分布变为簇状分布。

Model predictions are qualitatively consistent with experimental observations of regions of the buffer exposed to the highest temperatures,which indicate precipitation of secondary phasesanhydrite ± amorphous silica(opal-CT ± calcite and alteration of Na-smectite to Ca-smectite ± saponite.

模型的预测值能够定性地与高温下缓冲区的观测试验值相吻合，表明次生矿物的沉淀无水石膏±无定形二氧化硅(opal-CT±方解石和由 Na 基蒙脱石变为 Ca 基蒙脱石±皂石的相交替过程。

Empty your min,be formless... shapeless, like water.

放空你的思想，透明的，无定形的，像水一样。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。