三次

Test results showed that the decayof X2ray in some kind of explosive was obvious and its law conformed with cubic equation.

研究结果表明，X 射线在某炸药中的衰减是比较明显的，其衰减规律符合三次方程形式。

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。

Furthermore,a Cubic Curve-fitting equation deduces and set up.In the end,through a group of actual data,the effect of this new method is validated.

建立了三次拟合曲线方程，通过实际数据的检验，验证了该方法的拟合效果。

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。

How to resolve a cubic equation?

如何解三次方程？

This paper takes Daqing City of Northeastern China s Heilongjiang Province as an example,and introduces the way of gaining land cover information based on the TM image.Then the cubic equation is established to describe the dynamic situation of account of land use.

该文以大庆市为实例，介绍了以TM卫星影像数据为数据源，提取土地覆盖信息的方法，并以此为基础建立以时间为自变量的三次方程，来描述土地利用类型的数量的动态情况。

By the cubic equation fitting based on the data detected in measurement system as math model, the compensation program is compiled to carry out distortion correction in experiment program.

以检测装置测量拟合得到的三次补偿方程作为畸变校正的数学模型编写了测量校正程序，对光电测量系统进行了实验检测。

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。

If we could only weigh them with some kind of cubic tear measure!

如果我们以三次落泪作为衡量的标准。

For the data got by regional measuring mode in thickness measure, cubic spline is used to measure generatrix.

研究了基于三次样条曲线拟合及插值算法的壁厚测量数据可视化技术。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。