查询词典 key metal

It is concluded that, first, geochemical data of the surface soils can clearly distinguish two kind of soils, that is, juvenile soils, for example, purple soils, which inherits most geochemical characteristics of the parent rocks or materials, and anthropic soils, the geochemical characteristics of which have been greatly changed as the results of intensive impact from variety of agricultural uses. Second, different soils have typical indicator elements association respectively due to different parent rocks or materials and utilization, such as purple soils, yellow soils (low alkali and alkaline-earth metal contents and pH value), paddy soils (high organic element and heavy metal elements contents) and fluvo-aquic soils (high rock-forming accessory mineral elements contents) and so on. Consequently, it can be suggested that elements association is an important indicator for two key factors (parent materials and anthropic activities) of soil classification. Third, some differences exist between soil genesic classification and result of cluster analysis, because geochemical characteristics of surface soils can not completely represent the foundation applying to soil genesic classification, that is, condition and process of soil-forming, and soil property.

结果表明：浅层土壤的地球化学数据能较好地用来区分两类土壤，即紫色土一类的幼年土壤（在很大程度上继承了母岩、母质的地球化学特征）和受强烈人为活动水耕、早耕熟化的土壤（外来物质的不断加人显著地改变了浅层土壤原有的地球化学性质）；(2)各类土壤因母岩母质和利用方式不同，各具明显的标志性元素组合特征，如紫色土、黄壤（低碱和碱土金属元素和pH值）、水稻土（高有机元素、肥料元素和重金属元素）和潮土等，因此，这些元素组合是土壤分类两个要素的重要参照系；(3)浅层土壤的地球化学特征不可能完整地体现成土条件、成土过程和土壤属性这三个发生分类依据，因此，聚类分析结果与发生类型之间存在一定的差异。

Dimethylhexane-1,6-dimethyleurethane is the key material for preparation of 1,6-hexamethylene diisocyanate by non-phosgene route. Our work mainly focuses on the study of the catalytic performances of metal oxysalts and metal oxides for the ammonolysis of DMC to HDU-M. Experiment effect showed the ammonolysis was omposed by two steps, in which the first step was easier to occur than the second.

中文摘要六亚甲基-1，6-二氨基甲酸甲酯是非光气合成六亚甲基二异氰酸酯的关键原料，本文主要对金属含氧酸盐和金属氧化物这两类用于碳酸二甲酯胺解合成HDU-M 的催化剂进行了初步研究并优化了工艺条件。

A theoretical model is built to investigate the simulation of the infrared characteristic of the metal structure with the PCM false target.Structure parameters of the PCM false target that suit for the simulation are investigated numerically.According to the results,further request on the improvement of the thermal conductivity of PCM is presented.An experimental platform is built and the numerical model is validated experimentally.Three key thermal characteristic components of the false tank(barbette,wheel and front armor plate) are manufactured and tested,and good results are obtained.A method for the thermal conductivity enhancing of PCM by using aluminum fins is studied,the influence of the structure parameters of PCM plates to the simulation effects are investigated numerically,and the reasonable configuration parameters of the PCM plates used to simulate the steel plates of different thickness are obtained.In the study of the application of heat convection method in IR false target,a passive infrared simulation system is designed to simulate the infrared characteristic of metal constructions.The system is made up of pipe-plate,pump,receiver,and working fluid.

在相变材料应用于红外示假的研究中，通过数值模拟，研究确定了适用于制作假目标的相变材料各物性参数的范围，分析了相变材料制作假目标的可行性，并根据所得结果，选取石蜡为研究对象，建立了相变材料模拟金属构件红外特征的理论模型，研究了适用于模拟各金属构件红外特征的相变材料假目标的相关结构参数，得出了相变材料假目标模拟各金属构件红外特征的理论结果，并对相变材料的导热系数这一物性提出了进一步的改进要求；搭建了假目标实验平台，验证了所建理论模型的准确性；以坦克假目标为研究对象，制作了炮塔、负重轮和前上装甲板三个坦克假目标的关键红外热特征部件，并进行了野外实验，取得了较好的结果；以添加铝肋片作为改进相变材料导热能力的手段，理论研究了此类导热增强型相变材料的相关结构参数对模拟效果的影响，得出了模拟不同厚度钢板红外特征的导热增强型相变材料的结构参数及模拟效果。

Our products cover several tens of varieties such as glockenspiel series(wooden key series, metal key series, colored key series), drum series(bango drum, conga drum, hall drum, samba drum, waist drum, ground drum, sea drum, war drum, tambourine, wave drum), maraca, chicken shake, jingle ring series, sand block, shaker, castanet, finger castanet, block series, agogo series, clave, triangle, hand bell, sleigh bell series, wooden fish, guiro, cabasa, finger cymbal and so on; To improve craftwork level, our products design aims the requirements from clients and the innovation in varieties; to satisfy the clients' requirements on various grades and various batch scales, our manufacture introduces Flexible Manufacturing Process to control the procedure more rationally and guard the products quality more strictly; to set up a popular brand in market, we perseveres in a long term effort on service including that after sale and digs more latent clients' requirements.

本厂的产品涵盖打击琴类（木琴、金属键琴、儿童彩琴）、鼓类（邦戈鼓、康佳鼓、堂鼓、桑巴鼓、腰鼓、地鼓、印地安鼓、海鼓、战鼓、手鼓、铃鼓、波浪鼓）、砂球、砂蛋、铃圈、砂板、砂筒、响板、舞板、梆子、响筒、打棒、三角铁、碰钟、响铃、木鱼、鱼蛙、卡巴萨、指镲等数十个品种；本厂的产品设计立足于满足客户需求，不断创新，追求工艺品质；产品生产严把质量关，合理控制生产流程，可以满足客户不同档次规格和不同批量规模的产品需求；本厂注重产品的销售及售后跟踪服务，深度挖掘客户潜在需求，力争树立优质、完整的市场品牌形象。

Since it is fairly common for the machining dimensions of the metal labyrinth type sealing device being over the tolerances,it is suggested that more attention should be paid to the inspection on key dimensions of the metal labyrinth type axlebox,dust guard ring,long axle box front cover and the end sleeve,so as to prevent hot box accident caused by friction between matched parts.

针对目前金属迷宫式密封装置机械加工尺寸超差较为普遍的现象，提出对金属迷宫式轴箱、防尘挡圈、长轴轴箱前盖及顶套的关键尺寸应加强检测，以防止配合件发生摩擦造成燃轴事故。

After profound systematic theoretical and testing reasearch of metal rubber mechanical property,manufacturing technology,macro-micro constitutive relation and metal rubber spring coupling technique, we present deep intercross wiring manufacturing technology,establish infinitesimal spring constitutive model,non-symmetry elastic hysteresis constitutive model,dissipation factor testing method based on equivalent stress function and key technique methods of metal rubber elastic damping fabrication.

我们针对金属橡胶力学性能、制造工艺、宏观、微观本构关系及金属橡胶制造弹性联轴器关键技术开展了系统深入的理论与实验研究，提出了基于深度交叉钩联编织技术的制造工艺方法、建立了微元弹簧组合的微观本构关系、非对称弹性变形滞迟泛涵宏观本构关系、基于等效应力函数概念的损耗因子测试方法和金属橡胶制造弹性阻尼元件关键技术。

By the support of National Nature Science Foundation, some key problems of CVT were investigated, and some useful results were obtained as follows:(1) The relations between metal-belt misalignment in axial direction and transmission parameters were studied. By designing curved generating line pulley or adjusting the axial displacement of pulley, the degree of misalignment of the metal belt was decreaed.

本文在国家自然科学基金重点项目(编号：59835160)，国家教委重点项目教技司(98121号，重庆市科委攻关等项目的资助下，对CVT传动的若干关键问题进行了研究，本文的工作为CVT传动的研究、应用和开发奠定了基础。

Soft specializes in the production of EVA, Paper superscript, subscript pants, shoes superscript, rubber shoes at the end of mobile Block, PU products, football pendants, pendants cartoon, ball, rugby, acrylic key chain, compass key chain, crystal stone key clasps, leather key chain lights, flashlight key chain, key chain lightsé, tape measure key chain, PP fan, drink coasters, crystal coasters, pen, cushions, Trolltech Kai bottles, metal bottles Kai, Non-woven bag, bank bags, raincoats, aprons,×melamine, plates, bowls, plastic cups, cartoon, bank card sets, book sets, plexiglass and other products.

专业从事生产EVA软胶、皮标、裤标、鞋标、橡胶胶鞋底、手机座、PU类产品、足球挂件、卡通挂件、皮球、橄榄球、亚克力匙扣、指南针匙扣、水晶石匙扣、仿皮灯钥匙扣、电筒匙扣、验钞灯钥匙扣、卷尺钥匙扣、PP扇子、杯垫、水晶杯垫、笔筒、桌垫、奇趣瓶启、金属瓶启、无纺布袋、银行袋、雨衣、围裙、密胺烟缸、盘、碗、塑料杯、卡通片、银行卡套、存折套、有机玻璃等系列产品。

Plastic key holder 、 Metal key holder 、 Metal badge.

/ 胶匙牌、金属匙牌、金属徽章。

Environmental protection and sustainable development in agriculture has become key problems of human being in nowadays,and the heavy metal contaminates is one of severe pollutive originations,which enters the human body by food chain and endangers the health of human being. In this paper,the origination of heavy metal in soil was conducted and the review about the methods of heavy metal spacial variation in soil was discussed. The proposed implications were as follow:① the study on spacial variation of the heavy metal should be conducted by Geostatistical methods combinated with 3S technic;②a model about the geostatistics and the spacial variation of heavy metal was built.

环境保护及农业可持续发展成为当今世界人类面临的重要课题，重金属污染尤为突出，并通过食物链进入人体，对人体健康构成极大危害；本文简要分析了土壤重金属的来源，并对土壤重金属特性空间变异定量研究中所涉及的主要分析方法作了初步介绍；提出了重金属特性空间变异定量研究方法的两点启示：①地统计学与3S技术的结合来研究重金属空间变异；②提出了地统计学与土壤重金属空间变异分布建模。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失