查询词典 approximate differentiability

The disadvantages of obtaining control in approximate ways are analyzed, and the optimality criterion based on genetic algorithm is proposed.

分析了使用近似法求解控制量的缺点，据此提出了基于遗传算法的控制量优化求解策略。

Secondly, the effectiveness and limitation of the classical perturbation, such as the method of multiple scales and the Poincare-Lindstedt method, are discussed in detail through a Duffing oscillator with delayed velocity feedback. It is shown that the two perturbation methods are effective only in solving the approximate solution of the first two orders. An ambiguity or paradox will be encountered when they are used to seeking for the third or higher order approximation of solution.

其次，以一具有时滞速度反馈的Duffing系统为例，研究了经典摄动法如多尺度法，Poincaré-Lindstedt法等在求解时滞微分方程级数解时的适用性和局限性问题，指出利用这些方法只能有效求得系统的前两阶近似解，而在求系统的三次以上近似解时会出现矛盾或二义性。

Beyond the equilibrium point, the strategy of approximate orthogonal decomposition of state equation is put forward to analyze the higher-order part of the system.

对于平衡点外，提出对于状态方程进行非线性近似正交分解的策略，实现系统高次部分的分析。

We give left and right prediction of jump detection on basis of orthonormal polynomial. In theory analysis, we first give some theorems, then to proof the approximation, which is in a jump point detection by nonlinear prediction, can arrive one to number of samples. This result is considerable well. In the meantime, we study the approximate theory of measurement of jump point.

在理论分析中，我们首先给出了几个引理，然后证明了非线性预测法在检测单个突变点的逼近程度达到样本数的分之一，这样的结果是比较好的。

A method for synthesizing symmetric hinged 4-bar li nkage approximate to a straight line with a first ovdered osculation at three points of a given straight line was proposed.

提出了一种综合与给定直线在三个点上一阶密切的对称铰链四杆近似直线机构的方法。

If we parsed an outfielder's "theory" we would find it to be incoherent, ad-hoc, convoluted, and approximate.

如果我们对外野手的"理论"进行逻辑分析的话，就会发现它是不连贯的，即兴的，复杂的，而且只是一种近似的方案。

Based on an analysis of the mechanism of flow pattern alternation, approximate criterion for flow pattern alternation was formulated, and a numerical model was worked out for simulation of free overfall and submerged overfall alternation by combination of the above two models.

分析两种不同水流形态的交替机理，建立两种水流的转换条件，联立两种不同形态的数学模型构成保水堰的堰流和满流交替的非恒定流数学模型。

Simple designed experiments paired and unpaired comparison of means, approximate comparison of standard deviations and proportions.

设计简单的实验组和未配对的比较方法，比较近似的标准偏差和比例。

These layered rocks measure only 10 centimeters (4 inches) tall and are thought to be either volcanic ash deposits or sediments carried by water or wind. Data from the panoramic camera's near-infrared, blue and green filters were combined to create this approximate, true-color image.

关于这些层状岩石，有的测量数据约10厘米(4英寸)，相对高一点的地方，目前被认为或许是火山灰的沉淀物，抑或是风干沉积后的河床岩石层，当然这一切在被证实之前仍仅仅是猜测。

In actual practice, arrays approximate parallel access behavior.

在实际的实现中，阵列都采用近似并行访问的方式。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。