二-十进制

A higher moment method with the basis of Chebyshev polynomial ｛T_k｝ is presented,which is used in the reliability analysis of engineering structures.

1引言在工程结构的可靠性分析中，一次二阶矩法(包括中心点法、JC法、映射变换法和实用分析法)以及二次二阶矩法得到了广泛应用[1，2]。

This technique pro-duced not only N-phosphonomethyliminodiacetic acid with high quality but also a great deal of chloromethane by the hydrolyzation of dimethyl phosphite and methylal .

提供了一种利用亚磷酸二甲酯残液(亚磷酸二甲酯生产过程中的副产)和甲缩醛(甘氨酸法生产草甘膦过程中的副产)为原料来合成双甘膦的方法，采用该工艺可以合成高含量的双甘膦，而且利用亚磷酸二甲酯残液和甲缩醛的充分水解可生成大量的氯甲烷，从而大大提高上述副产物的综合利用价值，具有很好的发展前景。

Mr. Ying Yuandao ever summarized the discussions on the Christianity Localization Movement in China in the 1920s, and held that the so-called localized Christian churches should have the following characteristics:"First, churches of the Chinese; Second, set up according to the experiences of the Chinese Christians; Third, with rich quality of Chinese culture; Fourth, combine Christianity and Chinese culture into a whole; Fifth, suits the spirits and psychology of the Chinese People; Sixth, enables the religious life and experience of the Chinese Christians to be adapted to Chinese customs"1. In the 1960s, Japanese scholar Sumiko Yamamoto made more detailed summarization for the definition of the Localization Movement of the Churches in China in her article "The Independent Movement of Christianity in China in the 1920s":"First, churches are formed of Chinese; Second, churches are independent in administration and operation; Third, churches have independence in the economic aspect; Fourth, churches are adapted to the Chinese in the aspects of church building, divine music, divine painting and liturgy etc. Fifth, accommodate the sacrificial fete and customs of the Chinese and Christianize them; Sixth, churches must be involved in the practical issues in the State and the society of China; Seventh, churches must get rid the tradition and colors of the European and American churches; Eighth, churches must be able to control themselves, sustain themselves and spread by themselves."

应元道先生曾对20世纪20年代开展的中国基督教本色运动的讨论加以概括，认为所谓本色的基督教会应有以下几个特点："一是中华国民的教会；二是根据中国基督教徒自己的经验而设立的；三是富有中国文化的质素的；四是要把基督教与中国文化合而为一的；五是能适合中华民族的精神和心理的；六是能使中国基督徒的宗教生活和经验合乎中国风土的" [1]。60年代，日本学者山本澄子在其所著的《二十年代中国基督教的自立运动》一文中，对中国教会本色化运动的定义作了更详细的概括："一，以中国人为教会的构成；二，教会的行政与运作等方面的自立；三，教会在经济方面的自立；四，教会在教堂建筑、圣乐、圣画、礼拜仪式等方面的中国化；五，容纳中国人的祭祀与习俗，并与基督教化；六，教会要置身于中国国家与社会的现实问题之内；七，教会要除去欧美教会的传统与色彩；八，教会要能自治、自养、自传。"

Advances an efficient method of 2D FIR filtering based on impulse response rounding. Discusses the impulse response characteristics of 2D FIR filter. Then describes designing process of efficient 2D FIR filter based on impulse response rounding. Discusses application of efficient 2D filter with circular symmetric with eightfold symmetric frequency response. At last discusses the selection of rounding parameters.

提出了一种高效、实用的二维FIR滤波器的设计方法，在讨论了二维FIR滤波器的冲激响应特性的基础上，开发了一种基于冲激响应舍入法的高效二维FIR滤波器的设计方法，并以具有八重对称的圆对称滤波器为例讨论了高效滤波器的实现过程，最后对滤波器设计中的舍入参数的确定进行了讨论。

Vibrational circular dichroism is a useful technology to measure the circular dichroism of chiral molecules in the IR region, which remarkably expands the application of circular dichroism to the determination of AC.

振动圆二色谱是在红外波长区域测定分子圆二色性的一种新方法，极大地扩展了圆二色谱的应用范围。

The details as follow: 1.Based on rules about form error in GB, mathematical models of form error are established including straightness error on the base of minimizing zone method、least-squares method and two dots linked method ; flatness error based on minimizing zone method、lease-squares method、diagonal line and three dots method; circularity and cylindricity error based on minimizing zone method、lease-squares method、minimum circumscribed circle and maximum inscribed circle.

具体内容如下：根据国标中形状误差的相关规定建立了各种要素评定方法的数学模型包括：直线度的最小区域法、最小二乘法、两端点连线法；平面度的最小二乘法、最小区域法、对角线法、三远点法；圆度和圆柱度的最小区域法、最小二乘法、最小外接圆法、最大内切圆法。

A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.

对本文提出的各种算法，编制了数值计算程序，并把它应用于环境水力学反问题诸多领域，包括污染物一维非恒定扩散逆过程反问题，对流扩散方程逆过程反问题，河流水质纵向弥散系数反问题，非线性Boussinesq方程反问题，河流水质多参数识别反问题，BOD-DO水质模型参数反演问题，对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题，二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。

Two methods of discretization, collocation method and Galerkin method, have been dominant in existing meshless methods.

在最小二乘法和移动最小二乘近似的基础上提出了加权最小二乘无网格法。

The results showed that hexadecanoic acid diethanolamide and Daqing crude oil has favorable compatibleness, the binary system containing hexadecanoic acid diethanolamide(with the mass concentration of 0.2%) and HPAM(with the concentration of 1000mg/L)can produce ultralow interficial tensions 8.94×10~(-3mN/m against Daqing crude oil; the three compound combination system containing hexadecanoic acid diethanolamide(with the mass concentration of 0.2%) and HPAM(with the concentration of 1000mg/L)and Na_2CO_3(0.1%)can produce ultralow interficial tensions 6.34×10~(-4mN/m against Daqing crude oil.

其中，十六酸二乙醇酰胺与大庆四厂原油具有良好的配伍性，十六酸二乙醇酰胺0.2%、HPAM1000mg/L组成的二元驱油体系与大庆四厂原油可形成超低界面张力，最低可达到8.94×10~(-3)mN/m；十六酸二乙醇酰胺0.2%、HPAM1000mg/L、Na_2CO_31%组成的三元驱油体系与大庆四厂原油间的界面张力最低可达6.34×10~(-4)mN/m。

In order to recognize the 2D shapes, we proposed a set of perspective invariants of a pair of coplanar conics in this paper, we suggest a perspective invariant representation of general planar curve based on ellipse, and give an algorithm using the invariants and the representation to recognize 2D shapes.

为了实现二维形状的透视投影不变性识别，本文推导出了一种共面二次曲线对的透视投影不变量，提出了一种基于椭圆的平面曲线的透视不变性表示方法，并且给出了用该不变量和不变性表示方法实现二维形状识别的算法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。