查询词典 Poisson ratio

Cross ratio is an essential invariant related to projective transformations,and discovering intrinsic properties of scene by using invariance of cross ratio computation is one of the hotspots in computer vision fields.

1引言交比是一个和射影变换有关的一个基本不变量，它的透视不变性已经引起了计算机视觉研究人员的重视，人们利用它从透视图像中进行物体识别[1][2]。

Compution results show that the influence of longitudinal reinforcement ratio and cross section dimension could reduce the midspan dynamic drift, but the influence of stirrup ratio does not have obvious effect on the dynamic response.

计算结果表明：增加纵向配筋率与截面尺寸可以显著降低柱中节点位移，而增加箍筋配筋率的效果不明显。

Research on calibration of cameras based on cross ratio invariability ;2. Firstly,order radial lens distortion parameters are computed by using cross ratio invariability .

该方法利用透视投影的交比不变性原理标定镜头的畸变系数，基于摄像机成像的单应性矩阵及内部参数的基本约束，线性标定出其他摄像机参数。

In the calculation of futures costandard matrix, we use the MVGARCH model to reflect the cashs influence on the futures and the nonlinear changing of futures and cashes, thus the accuracy of hedge ratio would be inhanced, and we provide a new thought to solve the cross hedging ratio.

通过多元GARCH模型在计算期货合约的协方差矩阵的同时考虑了现货对期货的影响，反映了期货与现货收益率的非线性变化，提高了套期保值比率计算的精度，提供了交叉套期保值比率确定的合理思路。

The main works of this paper are as follows:(1) The various methods for determining the cryolite ratio of electrolyte were summarized and compared. The phase constituents of aluminium electrolyte system were studied, the various cryolite ratio definitions for this reason were discussed.

本文研究和测定了工业铝生产中与电解质相关的几项重要的物理化学参数，包括铝电解质分子比的测定研究，氧化铝溶解性能的研究及测定，氧化铝浓度的测定及工业铝电解槽氧化铝浓度—槽电阻曲线的绘制，铝在电解质中溶解度的研究及测定。

Ratio of current assets to current liabilities. It is the main liquidity ratio.

指流动资产与流动负债的比率，是主要的流动性比率。

Nutritious liquid NPK ratio is somewhat different (and the content of trace elements is the same ratio), so they could observe different kinds of nutrient solution on cyclamen growth potential and photosynthesis of the strength of the impact.

11种营养液在氮磷钾配比上有所不同（微量元素的含量和配比是相同），从而可观测出不同种营养液处理对仙客来生长势和光合作用的强弱的影响。

At present, the enterprise annuity investments are based mainly on the "pension fund management business on a trial basis", investment bank demand deposits, the central Bank notes, bonds buy-back short-term liquidity, and other products and the ratio of money market funds, funds of not less than 20% of net assets; investment bank time deposits, deposit agreements, bonds, Jinrong Zhai, corporate debt, and other fixed-income products and Debt conversion, the ratio of bond funds, the fund does not exceed 50% of net assets.

目前，企业年金投资的依据是"养老基金管理业务，主要是试行"，投资银行活期存款，央行票据，债券回购的短期流动资金，以及其他产品和货币市场基金的比例，不低于净资产的20％资金，投资银行定期存款，协议存款，债券，锦荣翟，公司债务，以及其他固定收益产品和债务转换，债券基金的比例，不超过基金资产净值的50％。

Each tile within the pattern is contained within one of two types of decagons, and the ratio of the decagon populations is, of course, the ratio of the Golden Mean.

该模式中的每个瓦片都包含在两个decagons类型之一，以及decagon人口的比例，当然，金的比例平均。

The results that the ultrasonic intensity have a direct ratio to the currents at electrode, when using this methods in the reduction of 〓 at Pt microelectrode, shown the manner of ultrasonic effect on the mass transfer on the electrode surface. And the inverse ratio relationship of current amplitudes to the separation of horn-electrode shown the decay law of ultrasonic intensity with distance.

将这一方法应用于铂电极上铁氰化钾还原反应体系中的研究结果表明，超声功率与电极反应电流幅值信号呈正比的关系，反映了超声能量对电极表面传质过程的影响程度的对应关系；电流信号幅值与超声作用距离的反比例关系则反映了超声振动能量随其辐射距离增大而衰减的规律性。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。