查询词典 metal detector

At present, although finite element methods is a kind of effective measures in analyzing metal plastically forming problems with friction, dynamic friction in the process of metal forming is substituted with static friction and constant frictional force as one of independent constraint conditions is transposed to equivalent node-load or FEM unit is divided into contact unit and inner unit in numerous studys and applications, so that it result in relative bad accuracy and awkward operation. These defects mostly attribute to the fact that FEM bases on the variational equality principles, however frictional constraint will actually result in variational inequality energy functional.

目前，应用于分析金属塑性成形的有限元法是一种有效的处理摩擦效应的定量计算方法，但是许多应用和研究是用常摩擦来代替金属塑性成形过程中的动态摩擦；把常摩擦力作为单独的约束条件移置到等效结点载荷上或把有限元单元划分成接触单元和内单元，这些将导致解的精度相对不高及实际操作不方便等一系列问题，产生这些不足的重要原因之一在于它的理论基础是变分等式原理。

Metal products and real estate go hand in hand, the real estate income slightly higher than metal products.

金属制品和房地产齐头并进，房地产收入略高于金属制品。

And now tonight-when you read about Ethelred breaking the old man's door,about the cry of the dragon,and the falling of the gates-it was,in fact,the breaking of her coffin,the scream of metal as she brokeopen the vault,and the ringing crash as the metal door fell to the floor!

到了今天晚上——当你念到艾特尔瑞德打破老人的家门，念到恶龙一声哀嚎，念到大门纷纷倒地的时候——实际上，那是她打破了棺材，是她打开地窖时铁门发出的尖叫声，是那铁门倒在地上发出的钟鸣般轰的一响！

And now tonight-when you read about Ethelred breaking the old man's door,about the cry of the dragon,and the falling of the gates-it was,in fact,the breaking of her coffin,the scream of metal as she broke open the vault,and the ringing crash as the metal door fell to the floor!

到了今天晚上--当你念到艾特尔瑞德打破老人的家门，念到恶龙一声哀嚎，念到大门纷纷倒地的时候--实际上，那是她打破了棺材，是她打开地窖时铁门发出的尖叫声，是那铁门倒在地上发出的钟鸣般轰的一响！

In this study we use the oligomers of amino ethylene series as matrix and introduce dithiocarbamate group to adsorb merely heavy metal ions. Because of its special structural characteristics , dithiocarbamate can combine with a great number of heavy metal ions to produce insoluble complex compound except for alkali metals and alkaline earth metals.

本研究系将氨基乙烯系列之寡聚物(oligomers of amino ethylene series)当做基质引入只对重金属离子具有特殊螯合能力之荒酸盐，除了与碱金属及碱土族外荒酸盐与其他重金属离子都能形成不溶性错合物。

In order to find out completely the soil-wheat contaiminated by heavy metals in Tianjin sewage farm, we collect samples on the dry land and examinate contents of heavy metals in soil-wheat system. Firstly, the anthor evaluates that soil irrigated by sewage that has been contaminated slightly, the main polluting factors are Cd and Zn, and then the anthor evaluates soil according to different regions, soil types and irrigating water. Secondly, the anthor analyzes content and enrichment ability of heavy metals in different part of wheat, evaluates wheat is contaiminated by Cd widespreadly, only few samples polluted by Zn.Finally the anthor put up correlative analysis about heavy metal contents in the soil-wheat system, as well as plant enrichment coefficient and some physico-chemical properties of soil, and establishes a prognostic model about heavy metal content among wheat spike, soil, soil types, PH, organic matter and salinity with the quantifying theory.The prognostic accuracy of primarily contaminative factors is the best with compound correlative coefficient examining, the model can be founded.With improvement of living level, people need cleaner food.

为全面了解天津市污灌区农产品生产地土壤和旱地作物小麦的重金属污染状况，我们于2004～2005年对全市污灌区的土壤和小麦进行了采样，在对该区土壤—小麦系统中六种重金属元素(Cd、Cu、Pb、Zn、Cr和Ni)的含量进行检测的基础上，本文首先分析评价了污灌区农田土壤的环境质量总体已达到了轻度污染水平，主要的污染因子是Cd和Zn，同时对污灌区农田土壤分区县、土壤类型和不同灌水类型进行了评价；然后分析了重金属在小麦不同部位的含量与富集能力，评价了污灌区旱地作物小麦普遍遭受了Cd的污染，只有个别样点遭受了Zn的污染；最后对土壤—小麦系统重金属含量间以及植物富集系数与土壤部分理化性质间进行了相关分析，由于土壤类型是定性变量，本论文以数量化理论建立了小麦穗实中重金属含量与土壤中重金属全量、土壤类型、PH值、有机质和全盐量间的预测模型，经复相关系数检验，污灌区主要的污染因子Cd和Zn的预测精度最高，模型可以成立。

This paper reviews the electronic structures of excited state and metal-metal interaction of a series of d^8 and d^10 complexes.

通过对一系列d^8和d^10配合物的激发态电子结构和电子激发前后金属相互作用的理论研究进行了评述。

If monlchamus tuhung roll and metal roller in normal contact, metal roller network on the wall are not trimmed down to innovativeink, the innovativeink of sticktness exorbitance, innovativeink sticktness should be adjusted.

如果不朱斗辊与金属网纹辊在变态隔绝状况下，金属网纹辊网墙上的油不朱仍不克不及挤掉，则表明油不朱的黏度功矮，答调动油不朱黏度。

The accumulation factors of heavy metal in different kinds of leafy vegetables decreased with the increase of the extractable heavy metal concentration, which can be described best by the exponential equation y=ax(superscript b.

不同品种蔬菜对各重金属的富集系数随可提取态重金属含量增加呈幂函数形式递减，且递减趋势与土壤中可提取态重金属含量范围密切相关。

The bacteria amounts on metal surface increased according to an exponential law and its adsorption kinetics at metal surface was proposed.

给出了微生物附着的动力学方程，并对其进行了讨论。两种钝态金属开路电位的变化和其表面微生物数量增加有着相似的趋势。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。