给出了反求工程中特征的分类和参数表达。
Then the feature classification and parameter representation in reverse engineering are pointed out.
只有从频散的斯通利波和弯曲波中提取出相慢度，才有可能进一步求准地层渗透率和横波慢度等参数。
Only when phase slowness is extracted from the Stoneley wave and the flexural wave, can the parameters of formation be obtained exactly, such as permeability and shear slowness.
1975年、1976年格林和斯坦利发表了求二维接触面参数的一个方法。
In 1975, 1976, Green and Stanley published a method to determine parameters of two-dimensional magnetic and gravity contact surface.
分别介绍了用分段多项式和朗培其一奥斯古特三参数方程拟合应力应变曲线并求切线模量和割线模量的方法。
By piecewise polynomials and the Ramberg-Osgood three-parameter equation fitting the stress-strain curve, the expressions of the tangent and secant modulus are derived.
至于GARCH(1,1)模型的估计过程，本文用最大似然估计法和BHHH算法求未知参数值。
As to the estimating process of GARCH (1, 1) model, the author adopted Maximum Likelihood Estimation and BHHH algorithm to get unknown parameters' value.
拟定了求定模型参数的方法和步骤，研究了参数随方向变化的规律。
The methods and procedures for determining the parameters in those models were defined, and the rules of variation of some parameters with change of direction were studied.
弥散系数是进行地下水水质评价和预测的重要水文地质参数，也是水文地质求参尚未很好解决的问题之一。
Disperston coefficient is an important hydrogeological parameter for the assessment and forecast of groundwater quality. It is one of the problems not well solved for hydro-geology.
本文提供了一些简单有效的方法，反求曲线上该点的参数和内权因子，避免了数值计算的不稳定性。
This paper provides some simple and efficient methods for inversely solving the parameter of the point and the inner weight, which avoid the instability in numerical calculation.
在介绍溶浸场地水环境复原研究过程中，提出反映环境整治程度的参数，如清洗比、清除比和清洗程度等概念和求测计算方法。
The study of this paper shows that the combinations between the washing and nature recovery methods will give us more efficiency during he process of treatment of i…
在介绍溶浸场地水环境复原研究过程中，提出反映环境整治程度的参数，如清洗比、清除比和清洗程度等概念和求测计算方法。
The study of this paper shows that the combinations between the washing and nature recovery methods will give us more efficiency during he process of treatment of i…
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