查询词典 complex function

It consists of fitting seismic ray traveltimes and positions to data calculated by ray tracing. In order to improve inversion stability and efficiency, seismic ray is described by Hamilton function and ray tracing is done in phase space. Validation tests on synthetic and practical data are analyzed. The tests show that this tomographic method is effective for estimating velocity field in complex media.

为提高反演的稳定性和计算效率，引入了Hamilton函数描述射线，在相空间计算反演所需的射线路径和目标函数对模型参数的导数，对理论模型和实际地震资料进行了试算，试算表明该方法对复杂介质具有较强的适应能力。

Another interesting nding is that homeownership is too complex to function as a single index for the investment climate.

另一有趣的方面是房屋所有权对于作为为了投资环境这一指数的功能来讲太复杂了。

Data warehouse can homogenize isomeric data and has a complex analysis function.

现有的基于数据库系统的水环境质量评价系统面向的对象单一，分析功能弱。

Now the triangular mesh model simplification algorithm based on edge collapse is very complex.Combining Garland's quadric error metrics algorithm and Hoppe's progressive mesh algorithm,a new algorithm for triangular mesh dynamic model simplification based on cost function is proposed in this paper.

目前基于边折叠的三角网格模型简化算法边折叠计算复杂，没有有效进行动态简化，结合Garland的二次误差度量算法和Hoppe的累进网格算法，提出了基于代价函数的三角网格模型动态简化算法。

In order to fit the need of complex and multi-function, this system uses a dual processor project, in which DSP is the hypotaxis processor, and single chip computer is the main processor.

文中还介绍了系统通信模块的设计和通信协议的约定，以及遥测、遥控和遥信功能的实现方法。

Thus, function and identity is essential in this design, simple and free must be emphasized, and we have dealt with all complex strokes to make the sign in a best state.

因此，在对GETEK 进行设计时侧重点便放在了识别性与功能性上，简洁大方的字体最能说明问题，我们将字体中所有复杂的笔画都做了处理，让整个标志达到极简的状态。

Secondly, a conjecture about the stability for these systems is proposed based on the sufficient and necessary condition of the isolated transfer function being positive real. When the zeros and poles of the transfer functions lie in the imaginary axis, a known conclusion is derived from the conjecture; while the zeros and poles are on the real axis, a new result is obtained and is proved in this note. Finally, according to the conjecture, an example with poles existing on the complex plane is presented, which is not only interesting but also challenging.

然后， 基于所有孤立部分传递函数都正实的充分必要条件给出了上述系统为稳定的一个猜想，当传递函数的零极点都位于虚轴上时，由这一猜想得到了一个已知的结论；当传递函数的零极点都位于实轴上时，由这一猜想得到了一个新的结论，本文证明该结论是正确的；最后，根据这一猜想，给出了传递函数极点位于复平面的一个例子，它涉及到一类系数矩阵为时变正定矩阵的振动方程的稳定性问题，值得去深入研究。

A new generalized object oriented Petri net model which can be used to evaluate the capability of equipment support was proposed. Its formal definition was given. The abstract place, abstract transition, message color and the message transferring function between objects were introduced in this model. This model has good modularity, inheritability, reusability, and maintainability, and can reflect flexibility and dynamic features of complex system. An example was given in the paper.

提出了一种可用于装备保障能力评估的增强型扩展的面向对象Petri网模型，给出了该模型形式化描述，引入了抽象库所、抽象变迁、消息颜色以及对象间的消息传递函数等新的概念，更好地体现了面向对象的思想，具有很好的模块性、继承性、重用性和可维护性，能够反映复杂系统的动态柔性特点，最后给出实例。

Unique spectral interference function deducted resolved ICP-OES analysis of complex sample matrix interference in the spectrum of problem

独有的扣除光谱干扰功能，解决了ICP-OES分析复杂基体样品中的谱线干扰问题

The invention refers to a method to correct universal frequency of electric communication technique, its character: make signal index quantization on the complex number of cross product, to directly reflect the quantized numerical value of tangent value and the located quadrant of imaginary and real parts, use inverse tangent ROM table to discriminate the processed result, then make loop filter and phase accumulation on the discriminated result to obtain error-correcting angle, and use digital controlled oscillator to make table look-up and quadrant adjustment to obtain correcting factor; use the relationship of trigonometric function in each quadrant to compress inverse tangent look-up table ROM and digital controlled oscillator look-up table ROM.

一种涉及电通信技术的通用频率纠正的方法，其特征在于：它采用如下步骤：经过叉积的复数进行信号指数量化处理，通过该复数虚、实部信号的指数量化结果的差值及其极性直接反映虚、实部的正切值的量化数值以及所处象限，将处理后的结果通过反正切ROM表进行鉴频，鉴频后的结果经环路滤波和相位累加，得纠偏角度，通过数控振荡器针对纠偏角度进行查表和象限调整，得到纠正因子；通过个象限之间的三角函数关系来压缩反正切查表ROM和数控振荡器查表ROM的大小，本发明资源耗费小，效率高，可极大地节省内存资源。

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。