粉末

In the study, nanocomposite Co/Al2O3 layers were fabricated by composite electrodeposition. Plating bath composition include cobalt sulfamate (CoSO4), cobalt chloride(CoCl2), boric acid(H3BO3), sodium chloride and nanosized Al2O3 powder with different volume concentration. Co ions and Al2O3 can codeposition of Cu substratum by DC current.

本研究以复合电镀方式制备Co/Al2O3复合镀层，所使用的电镀液内的成分有硫酸钴、氯化亚钴、氯化钠、硼酸，其中加入不同体积浓度的奈米级Al2O3粉末，使得Co离子和Al2O3粉末共沈积在Cu基材上而形成复合镀膜。

Therefore, the crystallite growth rate of anatase during calcination for aged gel powder was slower than unaged gel powder.

经过陈化处理的胶体粉末其粉末中的氢氧基随著陈化时间的增加而减少。

Anatase of unaged gel powder owned faster crystalline growth rate and worse aggregation during calcination than that of aged gel powder due to the existence of much more amounts of OH- in unaged powder.

未经过陈化处理的胶体粉末在煆烧过程中其锐钛矿晶粒成长较为快速且造成较为严重的凝聚，可能为粉末中含有较多的氢氧基所造成。

The cause of hard agglomerate formation and its effect on sinterability were investigated. The water-washed ZrO〓-Y〓O〓 powders were found to be greatly made up of hard agglomerates. The ethanolwashed powders also contained a few of hard agglomerates because of uneffective dehydration. Beside, ethanol volatilizes in advance of water during drying because ethanol has a lower boiling point than water, so steric effects of ethanol won't act. However, nearly no hard agglomerate formed in the azeotropic distilled powders, because of effective dehydration and higher boiling point for n-butanol.

研究指出，水洗工艺所得ZrO〓-Y〓O〓粉末几乎完全由硬团聚组成；乙醇洗涤工艺的脱水效果不是很好，并且由于乙醇的沸点比水低，以致在干燥过程中残留乙醇比水先挥发，乙醇的空间位阻效应不能有效地发挥作用，因此，仍然可以导致产生一定量的硬团聚；而共沸蒸馏工艺的脱水效果最佳，且正丁醇的沸点比水高，干燥时残留正丁醇比水后挥发，从而正丁醇的空间位阻效应可有效地发挥作用，因此避免了在煅烧过程中形成Zr-O-Zr键，即共沸蒸馏粉末中不含硬团聚。

MAS precursor powders were uniaxially pressed at 100 MPa employing a lubricated steel cylindrical mold. After sintering at 1450℃ for 2 hours, Single-phase cordierite ceramic is prepared, and its relative density is 95.1%.

以硫酸铝、硝酸镁和硅溶胶为原料，采用溶胶-凝胶法，制得MAS先驱体粉末，XRD表明，该粉末经1300℃的热处理后，完全转变为堇青石。

The experiment results showed that, the MnO_2 particles scattered uniformally after milled for 6h, the average diameter was 300nm, which loaded on the surface of fiber in flat successfully. The removal efficiencies to HCHO of MnO_2 milled for 6h was up to 94.07% after 72h, the removal efficiencies increased with the content of MnO_2 loaded, its increased after treated with DMF, or so was 7%.

实验结果表明，研磨6h的MnO_2粉末分散均匀，平均粒径可达300nm，以平铺的形式均匀地负载于纤维上，效果比较理想；随着吸附时间的延长，研磨6h的MnO_2粉末反应72h对甲醛的去除率达94.07％；活性炭／腈氯纶负载MnO_2纤维对甲醛的去除率比未负载的明显提高；随着纳米MnO_2负载量的增大，甲醛的去除率变大，用DMF处理后的纤维对甲醛的去除率有所提高，大约提高7％。

Panzhihua-Xichang area in Sichuan is abundant in vanadic titianomagnetite deposit. Because vanadium and titanium are transition metals and the difference between their atomic numbers is only 1, titanium carbide and vanadium carbide are refractory, high hardness and thermodynamically stable metal carbides.

而采用粉末冶金原位合成法不但可以解决铸造法因增强相体积分数增加及增强相与铁基体的密度差异而导致的铸造缺陷以及SHS的致密化问题，而且克服了粉末冶金法存在的增强体与基体之间结合不良的问题。

The medium is then centrifuged and made up as a dust or wettable powder for application to plants.

然后把培养基离心并制成植物用的粉末或湿粉末。

The physical and chemical changes and phase transformation of xerogel powder during heat-treatment are examined by means of DTA, XRD. The morphology of wollastonite powder is also observed by TEM.

采用DTA、XRD等研究了CaO-SiO2之凝胶粉末在热处理过程中的物理、化学变化及晶相转变，并通过TEM观察了干凝胶粉末热处理产物的形貌。

In this paper, a number of procedures were designed for studying the mechanism of forming hard agglomerates of Z〓O〓 powders, and the properties of resulting powders were investigated extensively.

研究超细粉末团聚体的形成机理、寻找控制粉末团聚状态的工艺方法是〓性能陶瓷制备理论与技术的焦点，是个十分重要的研究课题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。