查询词典 approximate partial derivative

Douglas and Russell first presented the idea of characteristics in[13],in whichthe diffusion term is included in the derivative of characteristic direction of the solu-tion and the backward difference quotient along the time axis was replaced by it alongcharacteristic direction.

Douglas，Russell[13]最先提出了特征法的思想，其主要特点是将模型方程的对流项隐含在解沿特征方向的导数之中，以沿特征方向的向后差商逼近取代通常方法中沿时间方向的向后差商逼近。

An improved derivative estimation algorithm with a low-pass filter that can suppress the influence of high-frequency noise is suggested to remove potential drawbacks of the backward difference that was applied in neural network inversion dynamic compensation method, such as large estimation error in the presence of noise and price increase of hardware realization when high estimation accuracy is required.

针对神经网络逆动态补偿策略中基于向后差分的微分估计算法在噪声环境下存在较大的微分估计误差，且提高估计精度会增加硬件成本等缺陷，提出了改进的微分估计算法，并以加速度传感器为例，设计了动态补偿实验装置，给出了基于改进的微分估计算法的动态补偿算法的实现步骤。

In fact,'the stock market has been such a consistent generator of cash flow, it's become a yield engine that's quite similar to the bond market,' says Dean Curnutt, head of equity derivative and convertible sales at Banc of America Securities.

美银证券股票衍生产品和可转换产品销售部的负责人迪安科纳特说，事实上，股票市场已经成了一台持续创造现金流的机器，它已变成了一部与债市十分类似的收益率引擎。

Letter of China Banking Regulatory Commission on Approving the Initiation of Dealings of Derivative Products by Shanghai Branch of Banca Intesa S.P.A.

中国银行业监督管理委员会关于批准意大利联合银行股份有限公司上海分行开办衍生产品交易业务的函-www.lawinfochina.com

Aiming at the fact that the direct on-line instrument measuring the Baume degree of black liquor is very expensive,by means of soft measuring technique,an indirect way to figure out Baume degree is proposed by detecting derivative pressure and temperature of the black liquor on-line.

针对黑液波美度直接在线检测仪表价格昂贵的现状，采用软测量技术，通过在线检测差压和温度来间接换算出波美度。

A good part of the problem in the financial sector is being caused by a beastie called the credit default swap which is a derivative.

对于财政部门来说，所谓"信用违约互换"的衍生物正在产生一个积极的方面。

The beef extract, a beef derivative, is a source of organic carbon, nitrogen, vitamins, and inorganic salts.

牛肉萃取物是一种牛肉衍生制品，可以作为有机碳、氮、维生素与无机盐类的一个来源。

The accurate content of benzimidazole derivative could be obtained by the traditional chemical titration method.

初步确定影响分析结果的杂质为未完全反应的原料之一邻苯二胺。

In this paper, a method of analysis which was based on thin layer chromatography was introduced. Benzimidazole derivative and amine were separated at first.

文中采用薄层层析法分离苯并咪唑衍生物及杂质，首先分离出苯并咪唑衍生物，然后用非水滴定方法分析含量，得到了准确的分析结果。

Amiodarone, an iodinated benzofuran derivative, is frequently used for the treatment of cardiac arrhythmia.

Amiodarone是一种iodinated benzofuran的衍生物，常用於治疗心律不整。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48