查询词典 approximate partial derivative

The results showed that with the increase of nitride partial pressure in the range of 2. 0～8. 0×10〓Pa, the hardness of NbN, TaN single layer films decreased, but the hardness of TiN films kept unchanged. The crystal structure of TaN films changed from the mixture of tetragonal β-Ta and faced-center cubic δ-TaN to hexagonal TaN and that of NbN films from FCC δ-NbN to hexagonal ε-NbN. The crystal structure of TiN films is FCC in all the range of partial pressure researched.

研究结果表明：在2.0～8.0×10〓pa的氮分压之间，随氮分压的升高，TaN和NbN薄膜硬度下降，而TiN薄膜的硬度值不随氮分压的变化而变化；TaN薄膜的相结构由低氮分压时的正方β-Ta和面心δ-TaN所组成的两相混合物过渡到六方TaN结构，NbN薄膜则由面心立方结构的δ-NbN逐渐过渡到六方结构ε-NbN，而TiN薄膜的晶体结构基本不随氮分压的变化而变化，均为面心立方结构。

Writer also recommends the two partial distribution tariff could be the solution for the Beijing area and explains the theories and methodologies of the accounting cost and marginal cost based tariff making and introduces the tariff mechanism and method applied in other countries' electric market. The two partial price, i.e. capacity price and electricity price, is also simulated and performed mathematical calculation based on the figures from the Beijing power grid.

并在分析了基于会计成本和边际成本的输配电服务定价方法及国外电力市场中实际运行的输电价格机制和定价方法的基础上，结合北京地区电网特点，对其配电价格制定进行研究，确定采用两部制形式，明确容量电价和电量电价的理论依据和计算方法，并根据北京电网的数据，对于北京配电网的服务价格进行测算和敏感性与可行性分析。

Regression equal between traction resistance and partial sphere height, bottom circle radium was set up to explore the effect of two evident factors(height and bottom circle radium of the partial sphere) on traction resistance by optimum calculation.

采用二次回归试验设计的方法，建立了球冠高度和球冠底圆半径大小与牵引阻力间的回归方程，进行了优化计算，进一步考察了球冠高度和球冠底圆半径大小两个显著性因素对牵引阻力的影响规律。

Three different types of partial discharge occurred on generators, such as delaminating discharge, end winding discharge and slot discharge; That can ensure the partial discharge types by analyzing discharge signal, because the three discharge types form mechanism and discharge intensity are different.

三种放电类型形成的机理不同，放电强度也有所不同，通过多次采集放电信号总结和分析，此方法可确定放电类型，但不能确定放电的具体位置。

Objective: To make a comparative study on tress distribution between implant-supported removable partial denture and traditional removable partial denture.

目的∶分析增加种植体支持对于Kennedy I类缺失可摘局部义齿应力分布影响。

Study on theory of partial molar quantity in preparation of bio-polymeric ferric sulfate;2. The paper presents some viewpoints on the understanding in the deduction process of Gibbs-Duhem equation and the collective formula of partial molar quantity .

对吉布斯—杜亥姆公式和偏摩尔量的集合公式的推导和理解的几个问题提出了作者的观点，认为不管有无恒温恒压的条件，体系的偏摩尔量ZB，m的零次齐次函数性质是吉布斯—杜亥姆公式的本质内容。

Based on thefundamental equations of motion of the theory of radial nonhomogeneousspherically isotropic elasticity,and,by introducing three displacementfunctions ψ,G and w,we get a simplifted system of the problem thatincludes an independent second order partial differential equation offunction ψ and a coupled partial differential equation set of functions Gand w.

针对沿径向为非均匀的且考虑温度和体积力影响的球面各向同性弹性体的振动问题，本文从三维基本运动方程出发，引入三个位移函数ψ，G和w，将问题简化为求解一个关于ψ的独立的二阶偏微分方程和一个关于G和w耦合的偏微分方程组。

An adaptive algorithm is also incorporated to remove the requirement for a priori knowledge about the upper bound of the derivative of observed signal.

而其中适应性控制法则是用来消除"需要知道信号其导数上界"的这一项前题。

However derivative financial instruments is a sharp "double-edged sword" and using the bad words in the company, is not a tool to avoid risks, but will make a greater business risk.

然而衍生金融工具是一把锋利的"双刃剑"，用的不好的话对企业来说就不在是规避风险的工具，而是会使企业陷入更大的风险之中。

Then considering earth rotation and 6-DOF movement,the expression of absolute velocity and absolute acceleration for vehicle centroid are deduced by using transform of vector derivative.

与陆基固定垂直发射条件不同的是，潜射弹道式飞行器是在运动着的潜艇这样的动基座上进行发射的，为了保持发射时潜艇的可操纵性以及发射后使发射艇尽快离开发射位置，发射艇要有一定的速度。

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