查询词典 math

By analyzing the model for magnetic suspension thrust bearing ,the math model of the system was established.

介绍了磁力轴承的主要特点及应用，并以一磁悬浮止推轴承模型作为研究对象，建立了系统的数学模型。

Aim To exlore the method for describing cutter and workpiece, and the method for recording the shape and parameters of the cutting layer when complex workpiece is processed by using complex cutter, and to establish the math- ematical model for thread-cutting process.

摘 要：目的为了建立螺纹切削过程的数学模型，研究用复杂形状刀具加工复杂形状工件时，刀具和工件的描述方法以及切削层参数和形状的记录方法。

Yeah. I'd group it right up there with that time in third grade when - convinced the math test I was about to take might very well ruin my life - I managed to vomit all over my teacher, my test, AND the cute boy with dimples sitting at the desk right in front of me… Andrew Montgomery, if you're reading this, I sincerely apologize.

耶。我把我三年级的所有事情全都揉合进这一集中——包括，我确信即将到来的数学考试将会毁掉我的生活——还有，我计划冲着我的老师，我的试卷，和坐在我右前方座位的有着小酒窝的小帅哥呕吐…（安德鲁蒙哥马利，如果你读到这些，我很诚恳的向你道歉。

There is a ten-minute break between my English class and my Math class.

我的英文和数学课中间有十分钟的休息。

Exhibition hall is divided into four, nine galleries, one of electric and magnetic layer for the area, power and machinery area, math section, the universe and Space Pavilion, set up a high-voltage discharge, electric magnetic Gallery, bowls, a typical mechanical transmission, three-dimensional coordinates and other exhibits; the second floor for the sound and light booth, Applied Technology Pavilion, set up a light display, three-dimensional holographic images, sound simulation, laser laser, simulated driving and other exhibits; three for the Life and Health Pavilion, set up a false impression cylinder, fitness tests, brain and facial features, body systems, such as exhibits; underground floor for temporary exhibitions; in the Office of the Hebei Academy of Sciences set up a pavilion style.

展厅共分四层，九个展区，其中一层为电与磁展区、力与机械展区、数学展区、宇宙与航天展区，设置了高压放电、磁电廊、滚球、典型机械传动、三维坐标等展品；二层为声与光展区、应用技术展区，设置了光路展示、全息立体影像、声音模拟、激光内雕、模拟驾驶等展品；三层为生命与健康展区，设置了错觉滚筒、体能测试、大脑与五官、身体各系统等展品；地下一层为临时展览；中厅设置了河北院士风采展区。

The dismal science attracts more sober-suited math geeks than poetic seekers.

不过，本月在亚特兰大举行的美国经济学会年会上，与会者更多的却是自我反省，而非玩弄数字。

The procedures of design and analysis of this mechanism is very complicated if individual graphic means or math analysis is used, So MAPLE was used in kinematical design and kinetic analysis of six-bar mechanism.

在进行该机构的设计和运动分析时，单独使用图解法或解析法其过程都十分繁琐，因此采用MAPLE对六连杆打纬机构进行动态设计和运动分析。

Because she got seventy-two in yesterday's math quiz.

因为她在昨天的数学小测中得了72分。

Even as secondary school math class this system is not always detailed lectures, a student, died when a breakthrough can not be targeted sparked teachers, students often need to complete self-reading operations.

甚至像中学数学这样的课也并不总是系统详细地讲授，当学生遇难点无法突破时老师才会有的放矢地细讲，学生常常需要看书自学才能完成作业。

To achieve high-performance PMSM position servo system, advanced control scheme, which is static precision, transient responses and self-adaptation and anti-disturbances, is needed in practice. Based on the analysis on the features and control principles of PMSM, this thesis established its math model using id=0 vector control method. Three close loops control system, which includes current loop, velocity loop and position loop, was built up. For position loop, the main feedback loop, we chose a new adapted-fuzzy CMAC intelligent controller, which includes self-learn ability of neural net and quick response merit of fuzzy controller. Finally, the author simulates PMSM position servo system by the simulink of matlab, an advanced computer simulation tool.

本文对PMSM的控制机理和特性作了较为深入的分析；建立了PMSM的数学模型，并采用了id=0的矢量控制策略；对控制系统组成及控制方式作了分析和比较，在此基础上建立了电流环、速度环和位置环的三闭环控制系统，对作为反馈主回路的位置环采用了模糊CMAC神经网络控制方法，该方法兼具模糊控制器的快速性和神经网络的自学习能力；构建了针对PMSM位置伺服系统的模糊CMAC控制器结构及其相应的算法；利用先进的计算机仿真工具（Matlab下的Simulink）对所提出的控制策略进行了数字仿真和分析；仿真和实验结果表明本文所提出的控制策略对PMSM位置伺服系统进行控制具有良好的鲁棒性能和快速性。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。