自然法

In this paper,we investigate the natural boundary element method for the boundary value problem of Helmholtz equation in an exterior elliptic domain.

本文研究椭圆外区域上Helmholtz方程边值问题的自然边界元法。

It contains boththe finite element equations and finite difference equations in one equation.

拟协调元法是广义协调方程的解，自然满足平衡对弱连续条件的要求。

I asa natural extension of the classical Newton method,based on a generalizedKakutani fixed point theorem,is presented that is well-defined.

方法I是经典牛顿法的自然推广，它的适定性是基于一个广义的Kakutani不动点定理得到的。

Using the map algebra function of the ARC/INFO system,a map of flood hazard assessment for Xiang River Basin is constructed by taking various natural factors,such as precipitation,topography and historic flood frequency,into consideration.

在综合考虑降雨量、地形以及历史上洪水灾害发生频次等自然因素的条件下，利用地图代数分析得到了湘江流域洪水灾害危险性评价图；在综合考虑人口密度、耕地面积百分比、人均GDP和单位面积水库和塘坝容量等社会经济指标的基础上，利用模糊综合评判法得到了湘江流域洪水灾害脆弱性评价图。

It was David Garrick who started what he called a natural method of acting .

要数大卫·加里克，他创立了他所谓的自然表演法。

Also the error of the premise of the magnified method based on the geometric progression of additional deformations is studied. It is recommended that the two methods should be combined together.

文中分析了基于附加变形的等比级数假定的放大系数二阶分析法的误差来源和特点，分析同时表明，两个方法的结合是自然而有效的。

Methods: Adding L20B cells into the large volume water, which was sterilized with germicide and was balanced with balancing salts.

细胞吸附浓集法：将自然沉清的水样抗菌、等渗处理后，加入适量的L20B细胞，混匀，充分吸收水中的脊髓灰质炎病毒，然后收集细胞培养、分离病毒。

The Book of Proverbs was numbered among the "Hagiographa"(writings held by the ancient Hebrews as less sacred and authoritative than either the "Law" or the "Prophets"), and, in consequence, copyists felt naturally less bound to transcribe its text with scrupulous accuracy.

图书编号谚语是在" Hagiographa "（著作举行的古代希伯来人少的神圣和权威比的"法"或"先知"），因此， copyists感觉不到自然的约束，以抄写其文字与严格的准确性。

This paper gives the method of homogeneous projection coordinates system that is established by original element turning to natural coordinates system under the projective change.

给出在射影变换下以原象元素所建立的齐次射影坐标系化为自然坐标系的方法，不妨称作基元变换法。同时给出射影变换的几何意

Natural contraception: Without normal period, imponderable.

自然避孕法：没有正常月经，无法计算。

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％。