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There are many problems in precipitating ammonium sulphate from a saturator, such as small crystal size, non-uniform crystal size distribution, nonstandard chroma and aggregation of crystals.

工业上硫酸铵通常是由炼钢的焦炉气被硫酸吸收后得到，或者是从生产己内酰胺的副产品中提取。

To test the toxicity of spore-crystal formulation of HBF-1 specific to larvae of several main scarabaeid species in North China, Bacillus thuringiensis suspensions mixed with sterilized fine soil containing potato pieces were used for feeding the larvae. The LC50 of HBF-1 crystal-spore powder to Popillia quadriguttata, Anomala exoleta, A. mongolica, A.

以我国筛选出的对金龟科幼虫具有杀虫活性的HBF-1菌株为供试菌株，采用菌悬液与含有土豆丝的土壤混合饲喂幼虫的方法，测定了HBF-1菌株孢晶粉剂对华北地区主要金龟子幼虫的毒力，其敏感性依次为四纹丽金龟Popillia quadriguttata，黄褐丽金龟Anomala exoleta，蒙古丽金龟A.mongolica，铜绿丽金龟A.corpulenta和苹毛丽金龟Proagopertha lucidula，LC50为3.104，18.987，30.924，34.713和55.995 μg/g土。

In this paper, we calculate the energy band structure of the phononic crystal by making use of the method of plane wave expansion and investigate the influence of crystal structure, the properties of elastic units and the filling and shape of scatterer on the band gaps in an attempt to provide theoretical guidance to the preparation of phononic crystals.

本文利用平面波展开法计算声子晶体的能带结构，研究声子晶体的结构，组元的性质及散射体的填充率、形状对能带结构的影响，力图为制备性能良好的声子晶体提供理论指导。

In brief, the process involves growing uniform crystals to a certain diameter, thinly slicing the crystal to very precise tolerances, edge rounding the form factors, polishing them into smooth wafers, then carefully packaging the wafers in a class 100/1000 room for shipping to customers. The main advantages of the VGF process include its scalability, low stress, high mechanical strength, and a defect rate that is orders of magnitude lower than conventional compound semiconductor crystal growth processes.

简言之，过程包括成长统一的晶体到某一个直径，薄薄的限制晶体到非常精确的公差，边缘圆整到形态要素，抛光他们成光滑的晶片，然后包装晶体在一个100/1000级别的空间为运输到顾客，VGF过程的主要优点包括，可测量性，低压力，高机械强度和一个比常规化合半导体晶体成长过程数量级低的过失率。

Considering the speciality of the principal reciprocal susceptibility in trigonal boracite, the experiment scheme on the measurement of the principal reciprocal susceptibility components is presented. On the basis of Curie principle, the order parameter of the antiferroelectric phase transition is investigated by taking crystal PZT, crystal SrTiO〓 and the antiferroelectric models of simple cubic lattice as examples.

针对五种特殊的具有铁电三方相的方硼盐，计算出了其铁电三方相的自发极化强度、居里温度和主倒极化率等，发现自发极化在居里点有跃变；沿极化方向的倒极化率分量是连续的，然而垂直于极化方向的倒极化率分量不连续，这是一个非常有趣的现象。

The quality of the crystal product is as good as overseas product or better. The work about crystal structure and the crystallization new technics for dexamethasone sodium phosphate, which was done in this paper, has not been reported in any literatures.

本论文所做的有关地塞米松磷酸钠晶体结构、结晶生产新工艺的研究与应用在国内外的文献中尚未见到过任何报道。

For example: SOGA products imported from Japan, Oceam products from Thailand, Italian crystal products DUENDE, Luminarc products of France joint venture, Turkey, the United States glass hotel supplies , domestic production and dedicated civilian tea utensils, fruit utensils, hotel accessories, ashtray import from all over the world, utensils and RONA crystal glasses of Czech and other products, its products attractive especially, quality up to international standards, variety complete, by Buyer's favorite at home and abroad.

日本进口SOGA产品、泰国进口Oceam产品、意大利进口水晶DUENDE产品、法国合资Luminarc产品、土耳其、美国进口玻璃酒店用品、国内生产及世界各地进口的民用专用茶具、果盘、酒店饰品、烟缸、器皿以及有捷克进口的RONA水晶杯等多种系列产品，其产品精美特别，质量达到国际水平，品种齐全，深受国内外买家的喜爱。

Solar silicon crystal growing furnace has two systems and three brands and all uses high performance CCD camera video vision sampling technology and PAC full automatic SCADA numerical control system of American Rockwell Automatic Co.,Ltd, and is suitable for 18/20/22 inch heat station and CZ method 6-8 inch IC circuit level and solar energy level silicon single crystal ingot.

硅单晶生长炉具有两大系列三个品种，全部采用高性能CCD影像视觉采集技术和美国Rockwell Automation公司PAC全自动SCADA数字控制系统，适用于18/20/22英寸热场和直拉法拉制6～8英寸电路级和太阳能级硅单晶棒。

Mordenite has a significant effect on the activity of catalyst, results of test showed: with soluble glass as main feedstock and addition of crystal precursor, thecrystalization time can be reduced, and the synthesized mordenite has higher surface area and structure of small crystal particulate and big pore diameter. Through ion exchange with ammonium and acid, the synthesized mordenite is suitable to prepare isomerization catalyst.

丝光沸石对催化剂活性有较大影响，试验结果表明：以水玻璃为主要原料，加入晶种可缩短晶化时间，合成的丝光沸石具有较高的比表面积及小晶粒大孔径结构，经铵交换及酸交换后适于制备异构化催化剂。

The crystal structure of 4,4'- biphenyldicarboxylic acid ethanol solvate, viz.(H2 bpa), has been determined by X-ray single-crystal diffraction technique at room temperature.

利用X-射线单晶衍射技术在室温下测定了4，4'-联苯二甲酸乙醇溶剂化物(H2 bpa)的晶体结构。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。