perpetual motion machine是什么意思

网络释义

用法例句

In this article,the author analyzes the cause of the wrong design of one kind of perpetual motion machines of the first kind,which is based on the principle of capillary phenomenon.

分析了一种根据毛细现象原理设计的永动机的错误原因。

New types of technique based on such factors,such as special permanent-magnet motors and automatic voltage regulation transformer for beam pumping units,ultra-low speed motors,were tested in 497 oil wells.

针对抽油机的特殊工况,分析了近几年国内在抽油机上应用的各类节能产品的特点,指出了影响抽油机系统效率的最主要因素;根据主要因素优选了新的节能技术(新研制的抽油机专用永磁电动机、抽油机专用自动调压变压器、超低速电机)在4 97口井上进行了试验,试验结果说明:只有对影响抽油机系统效率的主要因素进行整体改造,而不是单一节能技术的应用,才是提高系统效率的最有效途径。

And the permanent-magnet motor becomes the most compose of electric propulsion by its advantage.

另外，由于永磁电动机的优点，使其成为船舶电力推进的重要组成。

The structure and characteristics of the PM motor of outer-rotor were introduced,and the space vector control system was designed,using the high performance DSP.

介绍了外转子永磁电动机结构及其特点,并应用高性能电动机控制DSP,设计了电动机的矢量控制系统,电动机转矩和控制性能良好。

Application of sensorless permanent magnet motors to variable-frequency air conditioners;

基于无位置传感器的永磁电动机在变频空调中应用的研究进展

Cogging torque is one of the main concerns of permanent magnet motor.

齿槽转矩的削弱一直是永磁电动机研究的重点之一。

An analytical technique by way of partial differential equations is presented in this paper to analysis the magnetic field in air gap of the surface mounted permanent magnet motors.

解析法计算精度高,易于在计算机上实现,为永磁电动机的设计和优化提供了有力的工具。

Due to the special construction of magnetic pole, the permanent magnet starter motor with auxiliary pole has the advantages of high starting torque, high no-load speed, and low cost of magnetic pole, as compared to the ordinary permanent magnet starter motor.

特殊的磁极结构，使得带辅助极普通永磁起动机具有普通永磁起动机所不能比拟的优点—大制动转矩、高空载转速和低永磁材料用量。

Study on Passive Magnet Suspension Single-Phase Self-Starting Permanent Synchronous Motor;

被动磁悬浮单相自起动永磁电动机的研究

Computer Aided Design of Halbach Permanent Magnet Motor;

Halbach永磁电动机的计算机辅助设计

permanent magnet DC brushless motor

永磁直流无刷电动机

permanent-magnet stepping motor

永久磁铁步级电动机

miniature magnetic DC motor

微型永磁直流电动机

low-speed magneto synchronous motor

永磁式低速同步电动机

Finite Element Analysis of a Permanent Magnet Synchronous Motor

永磁同步电动机电磁场的有限元分析

Research on Field Oriented Control of Permanent Magnet Synchronous Motor;

永磁同步电动机磁场定向控制的研究

Research on Transverse Flux Permanent Magnet Machine and Its Control System;

横向磁场永磁电机及其驱动系统研究

Design and Research of Transverse Flux Permanent Magnet Synchronous Motor

横向磁通永磁同步电动机设计与研究

The Analysis and Calculation of Magnetic Field for the Rotor of PM Synchronous Motor

永磁同步电动机转子磁场分析与计算

Direct flux control of permanent magnet synchronous motors based on MTPF

基于MTPF永磁同步电动机直接磁链控制

Magnetic Field Analysis of Halbach Array for PMLSM

永磁直线同步电动机Halbach阵列磁场分析

3-D analysis of eddy current losses in permanent PMSM magnets

永磁同步电动机中永磁体的三维涡流分析

Calculation and Analysis of Electromagnetic Field in Line-start PMSM;

自起动永磁同步电动机的电磁场计算与分析

Two-dimension Dynamic Electromagnetic Field Computing Software of Permanent Magnet Synchronous Motor;

永磁同步电动机二维动态电磁场计算软件

Research on Electromagnetic Vibration and Noise for Low-Power Permanent Magnet Synchronous Motor

小功率永磁同步电动机电磁振动与噪声研究

Research of Permanent Magnet Brushless DC Motor Starter/Generator System;

永磁无刷直流电机起动/发电系统研究