查询词典 cubic equation

Results: The imprecision of six diluent concentrations in duplicate was 2.68%, the best fit model was the cubic equation. The deviaton from linearity of the first concentration was 42.3%, exceeding the 5% clinical allowable error. DLs of the other concentratons were within limit.

结果：六个稀释浓度样本重复测定的不精密度为2.68%，三次多项式为最适拟合模型，第一个稀释浓度的非线性程度达到42.3%，超过5%的允许范围，为临床不可接受，其它五个稀释浓度的线性偏离均在允许范围内。

The nonlinear equation of β obtained is subsequently approximated by a cubic equation from which β is solved directly.

利用这一极值原理，得到一个关于β的非线性方程，近似简化后成三次方程，直接求解。

The equation of van der Waals is a cubic equation about volume.

范德瓦尔斯方程是体积V的三次方程。

This paper discusses the method of hypothesis testing on equation parameters,and the way of getting new equations to explain the speed, cceleration and jerk through calculating the differential coefficient of cubic equation.

该文还介绍了方程参数显著性检验的方法，并通过对方程进行多次求导，得到新的方程，来描述研究期间土地利用类型面积的变化速度、加速度以及加加速度。

The method that simple cubic equation was changed from general to standard was introduced and the distribution of standardized real root was illustrated, which solved the problem of the distribution of any real root for simple cubic equation.

摘要介绍了一元三次方程一般式化为标准式的方法，结合图形给出了标准式的实数根的分布情况，从而解决了任意一元三次方程的实数根的分布的问题。

Second, the van der Waals type cubic equation of state was used to calculate the critical pressure of the binary systems. By introducing the temperature and acentric factor into the mixing rule of attractive part of the equation of state, a new expression was set up.

对实验数据和文献数据的计算结果令人满意，并按照无约束条件最优化得到了相互作用参数表达式的系数值，更加说明本文建立的相互作用参数表达式是正确的和有一定理论基础的。

Therefore at each time we get the roots of this cubic equation, we can decide if we keep or reject each root according to the continuity of the curved surface, the method is as follows: If , the relative cubic plane curve is just a circle, this circle can be gotten by solving .

因此在每次求得该一元三次方程的解时，我们根据曲面的连续性来判断这些根的取舍，方法如下：在处，所得的平面曲线就是圆截线，该圆截线可以由相截得到，即。

The grain filling process of two wheat cultivars with different spike-types were modeled with Cubic, Quadratic and Logistic equation,in which all the R~2 values were significant, and the difference among the R~2 values was also significant.

结果表明：通过用不同方程对籽粒生长动态进行拟合，Cubic、Quadratic及Logistic方程的R2值均达显著水平，且三种曲线的R2值间差异明显。

At and , we can get a univariate cubic equation in and its three roots . By the dependence of the roots and the coefficients of the equation, we can choose corresponding space points ( such that the distance is the shortest from to the point with parameters and . Thereby we can get all the data of discrete points on the cubic curve of blending surface at . Again we denote the maximum value and minimum value of planar parameter with which meets by and respectively.

利用根与系数的连续相依性，可以选相应的空间点使其距离的圆截线上对应值的点最近的两个根，从而得到处拼接曲面的截线的离散点的数据并确定出与相截的平面参数的最大最小值类似地由处拼接曲面截线的离散数据得到处的离散数据，这样可以依次计算出拼接曲面上对应所有参数点的离散点的坐标。

With the help of the chart of "Unit Cubic Parabola"presented in this paper, clvil engineers may findit more convenient to acquire the routs uf the cubic-equation.

借助本文建立的"单位三次抛物线"图线，工程设计人员可以快速图解出三次方程的根，从而进行相关的应力计算或其它分析。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。