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The singular perturbation method is a useful tool to work with the mathematical and physical problems.

它的主要思想是将非线性的，高阶的或变系数的数学物理问题的解用所含某个小变量的渐进近似式来表示。

Perturbation theory is a powerful tool for the analyze and design of the devices.

微扰理论的分析结果可以给器件分析和设计提供有力的帮助，因而该模型是器件设计的有力工具。

The Thai usually make salad with mortar and pestle. This tool can be found at Thai grocery store.

泰国人常用这类捣物器制作沙律，可在泰式杂货店购买得到。

The tool of Discover in the international popular software Materials Studio and the advanced COMPASS force field are adopted to simulate mechanical properties of PETN and PETN-based PBX at different temperatures, which is coated with four fluorine-containing polymers.

选择聚偏二氟乙烯、聚三氟氯乙烯、F2311和F2314作为粘结剂，对PETN及其与这4种含氟聚合物组成的PBX，用国际上流行的Materials Studio软件中的DISCOVER模块，以先进的COMPASS力场，主要模拟研究了PETN基PBX在不同温度下的力学性能。

This tool is used to assist the design and analysis of Petri nets.

本系统可用于Petri网模型的设计和分析。

Petri net is a kind of tool to desciption and analysis system.

Petri网是一种系统描述和分析的工具。

Petrify is a EDA tool for designing asynchronous circuit basing on Petri net,it has powerful function and convenient to manipulate.

Petrify是一个支持基于Petri网设计异步电路的EDA软件，其操作简单功能强大，可以通过这个软件设计出速度无关异步电(来源：35ABC论2525文网www.abclunwen.com)路。

A frequency-domain research tool for calculating the initial amplitude,phase,frequency and time constant of fault transient components in complicated networks is developed.

为计算复杂电力网络故障暂态分量的初始幅值、相位、频率和时间常数，开发了一套新的频域计算方法和研究工具。

Action c22 "a phlebotomist performs a venipuncture with a syringe" as shown in Figure 4 can be represented with the DIPs, an agent "phlebotomist", an act "performing", an object "venipuncture", and a tool "syringe" as follows

动作c22"一个医师用一个注射器进行静脉穿刺的操作"，在图4里用DIPs描述成，一个活动者"医师"，一个活动"操作"，一个对象"静脉穿刺"，和一个工具"注射器"，如下

So it is a major tool to accumulate and organize the pathologic information by effectively using digital photomicrography to collect image data of the specimen.

利用数码显微摄影进行病理玻片标本资料的采集，是病理资料积累和管理的重要手段之一，完善的病理玻片标本资料对医疗、教学和科研都起着非常重要的作用。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。