多种选择

Our company is the specialized production CNC engraving machine's high salary enterprise, which is mainly engaged in the stone material engraving machine's research and development, manufacture and sale. In the base of Shandong University, we are devoted to research and produce of CNC. Stone engraving machine can carve hardwood surfaces of marble, blue stone, jade quartz, agate, glass, plastic cement, ceramics, stainless steel, titanium alloy, copper, iron, aluminum, bamboo willfully. According to the different materials, there are many kinds of different carving methods, achieves the artistic effects with different styles.

石家庄石威数控设备有限公司是专业生产数控雕刻机的高新技术企业，主要从事石材雕刻机的研发、制造、销售，并以河北工业大学为依托致力于CNC的研发与生产，石材雕刻机能在大理石、青石、玉石水晶、玛瑙、玻璃、塑料水泥、陶瓷、不锈钢、钛合金、铜、铁、铝、竹木等硬材表面做任意雕刻，且可根据不同的材质，有多种不同的雕刻方法，可供选择，足以达到风格各异的艺术效果。

Because there are many types of components, it selects components appropriately based on the demand of products. This system is made up of the mode of coating paper with rollers, drive system composed of steel net supported and three drivers, dryness system composed of oven with air floated and drying um with electric tubes, synchronous control system with the positions of strain rollers. And it developed an appropriate software of control system. This system achieves demands of operation, stabilization, continuity and high efficiency.

由于涂布系统中各部件存在多种类型，根据生产产品的品质要求对涂布系统各部件进行了选型，最终选择了门辊涂布方式，采用钢网支撑，三电机控制的传动形式，结合气浮式烘箱以及电热管加热的烘缸组成的干燥系统，张力辊位置为控制对象的同步控制系统，同时设计了一套相应的软件控制系统，以实现连续稳定高效的生产要求。

For some kinds of vegetables and pasturages, the contents of some heavy metals surpass the relevant quality standards, so when some crops were planted on the substrates, the uneatable species should be selected preferably and if some kinds of vegetables and pasturages must be adopted, the output could not be provided to mankind and also not be used in farming, in order to avoid harming peoples'health.5 The expediency evaluation model of pioneer plant on substrates was established and some plants were studied. The results show that the expediency evaluation of pioneer plants were respectively that clover was expedient to substrate 1, juniper, cotton and fescue were expedient to substrate 2 and juniper, annual bluegrass, fescue, cotton and clover were expedient to substrate 3.6 Some indexes to evaluate the capability of the phytoremediation on heavy metals and the comprehension about hyperaccumulator were put forward.

有多种植物的重金属含量超过了相应的国家标准，因此在基质上种植植物时，尽量选择非食用性植物品种，即使种植了蔬菜和牧草等植物，也不应将收获后的产品供人类食用或用于畜牧生产，以免危害人体健康。5建立和研究了复垦基质先锋植物的适宜性评价模型，结果表明，不同基质中适宜的先锋植物分别如下：基质1为苜蓿，基质2为桧柏、棉花和高羊茅，基质3为桧柏、早熟禾、高羊茅、棉花和苜蓿。6探讨了评价重金属元素植物修复能力的指标体系和&超富集植物&的概念。

A variety of material choices, you can choose two-plus Venetian glass, you can choose color plates, gypsum board, melamine board, cloth velvet.

多种材质选择，可以选双玻璃加百叶帘，也可以选彩钢板、石膏板、三聚氰胺板、布绒等。

More kinds of synthetic rubber and engineering plastics applications, and a wider selection of body lining material to diaphragm valves in the various fields of modern industry have been widely used.

更多种人造合成橡胶和工程塑料的应用，以及更广泛地选择阀体衬里材料，使隔膜阀在现代工业的各个领域都得到广泛的应用。

You can buy a glass or a bottle of wine, and there may be a lot of different prices and qualities to choose from.

你可以买一杯酒或一瓶酒，有多种不同的价格和质量标准可供选择。

Two general points of a 9-inch pizza (one of about 48-58 yuan, quite a variety of flavors, seafood, Extreme, etc., no matter how you choose, and some varieties will be your point), two glasses of drinks (cola cup 9 yuan, two glasses of 18), a grilled chicken wings (19 million), if with a girlfriend, you can point a self-service salad 28 yuan, is to let you take a plate, you first performance How many fruits can be installed, but not to the two back, you must not take into account the face, the more the better it is loaded face plates around you can use to block the fruit, such as watermelon, first Wai a bucket-shaped containers, the middle can be installed on many other fruits a

两人一般点一份9寸比萨饼(一份大约48-58元左右，有好多种口味，海鲜，至尊等等，任你选择，有的品种还会贵一点)，两杯饮料(可乐一杯9元，两杯18元)，烤鸡翅一份(19元)，如果带女朋友，可以再点一份自助沙拉28元左右，就是让你拿一个盘子，你一次性能装多少水果都可以，但不可以来两回，你一定不要顾及面子，装得越多越有面子，盘子四周你可以用方块状的水果，如西瓜，先围个水桶状的容器，中间就可以装很多其他的水果了

Then the surface reconstruction that includes data fitting and fairing technology is studied mainly and many fitting methods are analyzed in all respects, including compare their advantages and disadvantages, At last some reasonable methods are selected and is used in cams reverse engineering that are parts of cigarette machine at high speed, At the same time the precision of the reverse result is analyzed in detail.

然后对曲线曲面重构即数据拟合及光顺技术这一关键技术做了重点研究，从不同角度研究了多种拟合方法，比较了它们的优缺点，选择了比较合理的拟合方法对高速卷烟机上的凸轮进行反求，并对反求结果进行了详细的精度分析。

In selecting the site of the Olympic Games, the IOC considers a number of factors, chief among them which city has, or promises to build, the best facilities, and which organizing committee seems most likely to stage the Games effectively.

在选择奥运会主办地时，国际奥委会要考虑多种因素，主要的是看该城市是否具备或承诺修建最好的设施，以及该国奥运筹备委员会是否有可能有效地筹划好奥运会。

In this project, the selection criteria of matrix and reinforcement for obtaining composites with high strength and toughness are determined. The as-cast and aged microstructures of composites reinforced with particles of different strength are observed, and their metallurgical conditions and stabilization mechanisms are analyzed. The aging precipitation behaviors and mechanisms are studied. Some characteristics of nano-materials (micro-distortion areas) are found in 150nm- Al2O3p/Al composites and their formation mechanisms are expatiated. The "flexible" restriction to the deformation of the matrix by low strength AlN particle is observed by in-situ TEM and SEM techniques, and the mechanisms of its resist on cracks propagation and its contribution to composite strength are revealed. The high temperature deformation behaviors of Al2O3p/Al composites are studied. A rare-earth coating is established on sub-micron Al2O3 particles, leading to an improvement in wettability between coated Al2O3 and liquid aluminum and a decrease in infiltration pressure. The strength and ductility of coated particles reinforced composite are also increased. The interfacial characteristics, bonding structures and their formation mechanisms are studied, and the crystal orientation relationships between reinforcement particles and aluminum matrix are investigated. Finally a lighter composite with better balance of strength and damping properties is reinforced with hollow ceramic microballoons of ultra-lower strength.

本项目发现了获得高强度和高韧性复合材料的基体、增强体选择依据；观察了各种强度质点增强复合材料的铸态和时效态微观组织，分析其微观结构形成的金属学条件及稳定性机理，研究了其时效析出规律和时效机制，发现了150nmAl2O3颗粒增强铝基复合材料基体中的纳米材料特征，并解释了其形成机理；利用TEM和SEM动态拉伸技术发现了低强度质点AlN颗粒对变形协调的&柔性强化&机制，揭示了其对裂纹扩展的阻碍作用和对复合材料高强度的贡献；研究了中强度质点的Al2O3颗粒增强铝基复合材料的高温变形行为，并对其进行了稀土界面层设计与制备，改善了颗粒与铝合金之间的界面润湿性，降低了复合材料铸造渗透压力，提高了复合材料的强、韧性；研究了多种复合材料界面结构及形成机理，确定了增强体与基体之间的界面结合机制，分析了复合材料界面处的晶体学位向关系；最后制备了含微孔的中空型陶瓷颗粒增强的特种复合材料，得到了强度和阻尼综合性能较好的轻质复合材料。

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。