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According to calculations for the partial derivative of compound function, derivatives of perimeter are deduced.

在每轮优化迭代步中，根据当前结构周长值确定周长上限值，从而避免基于数值实验的周长上限确定过程。

A method based on complex frequency domain analysis is presented for the simplification of the partial differential model of non compressible fluid transportation process.

通过复频域分析，从理论上提出了一种建立输送管内不可压缩流体动态传送简化模型的方法。

Concealer Powder is possible, but it is the whole cover, partial cover, then still have to concealer.

遮瑕粉饼是可以的，但是是整体遮盖，局部遮盖的话还是要遮瑕膏。

When performing these movements concentrically the muscles involved are only under very partial load as the hip and knee joints move to full extension.

在进行这些动作都是肌肉只集中在极偏负荷的髋关节和膝关节全部迁往扩建。

Objective To compare and appraise concha nasalis inferior partial excision methods and under the nose endoscope the pliers clamp with plasma treatment for chronic hypertrophic rhinitis.

目的 比较和评价下鼻甲部分切除术和鼻内镜下钳夹法联合等离子治疗慢性肥厚性鼻炎的效果。

The conclusion concha nasalis inferior partial excision methods and under the nose endoscope the plasma iatrotechnics treatment for chronic hypertrophic rhinitis is similar.

下鼻甲部分切除术与鼻内镜下等离子治疗术治疗慢性肥厚性鼻炎效果相似。

As the impregnant, the insulating oil is provided with the following features, such as excellent dielectric performance, stable chemical performance, non-chlorine or chlorinated biphenyl, complete biodegradation, non-pollution, low condensation point, low viscosity, excellent performance under low temperature and absorption capacity for the gas which is produced by partial discharge, high fire point, excellent capability of over-voltage withstanding.

作为浸渍剂的绝缘油具有优良的介电性能，化学性能稳定，不含氯或氯化联苯，能完全生物降解，对环境无污染，凝点低，黏度小，低温性能好，对局部放电产生的气体有很好的吸收能力，燃点高，具有出色的耐受过电压能力。

The flow sheet and operation in phthalic anhydride plant system after the adding partial condensator were introduced.

介绍了苯酐装置系统中增加部分冷凝器的流程，操作讨论了加部分凝冷器前后的经济效益。

While the boundary condition of the partial differential equation is determined, the blade can be formed.

数值求解边值问题的解，即可得到泵叶片的数值模型，然后再将叶片的数据导入造型软件并生成叶轮的实体造型，实现了离心叶轮的参数化设计。

In this paper, we invert the condition equation into a complete nonlinear partial differential equation, and study some properties of the solution of this equation from a theoretical point.

本文把其条件方程转化为一个非线性偏微分方程，从理论角度探讨了一下此方程的解的一些性质。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。