二次利用

In this paper, a novel nonlinear double-exposure technique for fabricating fiber Bragg gratings with triangular spectrum is proposed.

提出了一种利用非线性二次曝光技术制作三角形光纤Bragg光栅的新方法。

With polybismaleimide resin/cashew nut oil modified phenol formaldehyde resin as bonding agent,and other electric conductive phase,lubricating phase and intensifier fiber,modified resin-matrix pantograph contact strip was produced by the processes of hot rolling,dually heated die-pressing and hydro-solidification technology.

采用共混改性的聚双马来酰亚胺树脂/腰果壳油改性酚醛树脂为粘结剂，添加导电相、润滑相和增强纤维相，利用热轧混料，二次热模压及通氢固化等工艺制得改性树脂基受电弓滑板试样。

This is based on the feature of changelessness of the intensity contour in the Fourier spectrum plane while object plane is moved in Fourier transform system.

根据傅里叶变换系统中物面平移其频谱面上光强分布不变的特点，提出一种利用二次傅里叶变换实现CCD精密定焦的方法。

Compared with ferrous sulfate deoxidization method, lead chrome yellow production technology was fitter to the production requirements of enterprises. It not only treated the pollution of heavy metals, but also it reclaimed and utilized lead and chrome resources, and it reduced or avoided the secondary pollution, which could gain good economic benefit and social benefit.

铅铬黄生产工艺与硫酸亚铁还原法相比更适合企业的生产需要，不仅治理了重金属污染，同时回收到利用了铅、铬资源，减免了二次污染，取得了良好的经济效益和社会效益。

There are usually several vibration modes participating in heliostat's response to wind induction. The complete quadratic combination method can take the modes' coupling effect into account. The result is precise, however the computation work is heavy. Therefore, the proper orthogonal decomposing stochastic wind field was proposed to be applied in computation of heliostat's response to wind induction.

定日镜结构风振响应中有多个振型参与，利用完全二次型组合法可以考虑各振型间的耦合作用，得到精确结果，但计算量很大，因此提出将随机风场本征正交分解技术运用到定日镜结构响应计算中。

This paper , which aims at the developing strategy of express service ,researching and analyzing Chinese and foreign express corporations current situation ,forecasts the demand of Chinese express market in 15 years with conic section model on the base of statistics.

本文立足于快递业的发展战略，调查并分析了中外快递公司在我国发展的现状，根据实际的快递业务数据，利用二次曲线预测模型方法对未来15年内的快递市场需求量进行预测，并在分析快递业存在问题的基础上，提出了快递业谋求发展的措施以及应付激烈竞争的对策。

A method for interpolating global curvature continuity curves with conic segments is presented in this paper.

提出利用有理二次样条曲线插值整体曲率连续的曲线的一种方法。

Since the conics are used as the calibration primitives, which are global features, the proposed technique is more robust and stable.

由于该方法利用二次曲线作为标定基元，简化了基元对应问题，并且精度和稳定性都比较高。

The present thesis will adopt some of these methods to study on conjugation including the conjugate chord, Conjugate Direction and conjugate diameter of Conics as well as the Conjugate Direction, Conjugate net, Harmonic conjugate and Conjugate minimal surfaces of surfaces.

本文利用到了其中的某一些方法，讨论了这个问题，其中包括二次曲线的共轭弦、共轭方向，共轭直径。曲面上的共轭方向，共轭网，调和共轭，共轭极小曲面等。

In terms of the minimum question of a positive definite quadratic function,a set of Newton directions in minimum points derived with an accurate single dimensional search are used to produce a set of conjugate direction ,and a proof of convergence is presented.

对正定二次函数极小问题，利用精确一维搜索所得极小点处的牛顿方向来生成一组共轭方向，并给出收敛性证明

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。