参数曲线

In this article, genetic algorithms are used in regression analysis of technical parameters of metallic centrifugal casting machine with water cooling, resulting in a fitted curve reflecting the internal properties of the experimental data.

此文利用遗传算法对水冷金属型离心铸管机生产工艺参数的实验数据进行回归分析，得到了反映实验数据内部规律的拟合曲线。

The stratigraphic completeness was figured out, which improved the resolution of recognition of sequences; the fractal dimensions of log curves change abnormally at SBs and fs, being a good parameter in high-resolution sequence stratigraphic analysis and explanation of the complexity of geological background; the fixed vector and the transfer step of the probability matrix can be used in describing quantitatively the randomicity law of the evolution of stratigraphic accumulation, being helpful in analysis of sedimentary series.

测井序列的小波变换不仅可以直观方便地识别层序、准层序界面，而且，与FFT相结合进一步识别出其中的米氏旋回层，并计算出层段地层完整性，大大提高了层序识别分辨率；测井曲线的分形维数在测井层序界面及海泛面处有异常反映，是高分辨层序分析及地质背景复杂性解释的有效参数；固定向量和状态矩阵转移步数可定量描述沉积序列演化的随机规律性，是地层序列分析的辅助手段。

With mature wild M. officinalis plants as the materials, the diurnal variations of their chlorophyll fluorescence parameters and the photoresponse curve of chlorophyll fluorescence were determined by portable modulation chlorophyll fluorometer.

方法］以成熟的野生海枫藤植株为材料，利用便携式调制叶绿素荧光仪测定其叶绿素荧光参数的日变化和叶绿素荧光光响应曲线。

A data acquisition and data analysis software for the fast fluorscence kinetics fluorometer of our laboratory is redesigned and recompiled using assembly and BASIC language. The data acquisition rate in the fast rising part of the fluorescence kinetics curves is one order faster (100μs/point) than the old one. It can measure fluorescence parameters, such as Fo and Fi more accurately for calculation of the relative content of inactive PSⅡ, etc.

用N80-BASIC语言结合汇编语言重新编写了本室快速叶绿素动力学荧光计的测控程序，使快速荧光上升曲线的采样速度提高了一个数量级（达到100μs／点），可对Fo、Fi等关键荧光参数进行精确测定，为无活性PS Ⅱ中心相对含量的准确测定奠定了基础。

According to the relationship between parameters and resonance curve, the frequency characteristics of resonance are examined.

基于这些参数与共振曲线的关系，提出了共振状态下的频率特性。

Most data sheets will have a typical frequency response curve to assist the user.

多数的参数资料页都会有典型的频率响应曲线，给用户提供方便。

Based on this theory,and combined with Fourier transform frequency spectrum analysis and curve fitting ,the formula and arithmetic of equivalent mainfrequency for the frequency conversion measurement are derived.

本文正是基于这种变频法的思想，结合傅立叶变换频谱分析法和曲线拟合方法推导了介质损耗参数的工频等效计算公式和算法。

Based on the stress-strain relationship, tests, no tensile stress of masonry and assuming resistance submit gauss distribution, the resistance equations and its statistic parameters are obtained.

从圬工材料的应力—应变关系曲线出发，并假设圬工材料不抵抗拉应力，推导出了截面抗力的表达式并根据现有的试验资料统计，假设抗力服从正态分布，统计出分布参数。

According to the Gaussian point expansion function curve characteristic,a new Gaussian PSF accurate estimation algorithm is put forward.

根据高斯型点扩展函数曲线的特点，提出了新的高斯型点扩展函数参数的估计方法。

The problem is that almost all forecasters work within the parameters of the Gaussian bell curve, which ignores large deviations and thus fails to take account of "Black Swans".

问题在于几乎所有的预测都作用在高斯钟形曲线参数下，忽视了大的偏差数，导致了"黑天鹅"的被遗忘。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。