徐凝是唐朝的一位诗人，一生布衣，无权无势，默默无名。
Xu Ning is a poet of tang dynasty, from cradle to the grave cloth dress, have no business sans potential, silent anonymity.
有的人，在你有权势的时候，围着你团团转，而你离职了，或无权无势了，他却躲得远远的。
When you are influential, somebody always fusses around you, whereas when you are dismissed or don't have powers, he stays far away from you.
委员会认为，‘无权无势的阶层并未享有全民接受教育的权利，而对此当代文明却过早地引以为豪’。
"The universal right to education, in which contemporary civilization takes such premature pride," says the commission, "is often refused to the most underprivileged."
在这个世界，固然名利至上、情面稀薄，本人们无权无势、一无所有，可本人们有一颗朴拙仁慈地心。
In this world, although the fame and fortune first, weak human, we are powerless, penniless, can we have a genuine good heart.
一系列的实验，尝试从实验志愿者的心理中诱导(elicit)出“有权有势和无权无势”的心理状态。
A series of experiments which attempted to elicit states of powerfulness and powerlessness in the minds of volunteers.
无论如何，希刺克厉夫先生也根据他妻子的权利，以及他的权利把它拿过来了；我想是合法的；毕竟，凯瑟琳无钱无势，是不能干预他的产权的。
However, Mr Heathcliff has claimed and kept them in his wife's right and his also: I suppose legally: at any rate, Catherine, destitute of cash and friends, cannot disturb his possession.
在启动时，没有反电动势，在无传感器模式下电机的位置不能检测到。
At startup, there is no back-EMF due to the stationary motor, and the motor position cannot be detected in sensorless mode.
在建立前视声呐视域模型和人工势场模型的基础上，对AUV进行决策控制，通过梯度逼近法对目标进行搜索，快速规划出一条无碰撞的路径。
On the basis of building forward looking sonar view model and artificial potential model, decision control of AUV is made, objects are searched through grads approach, a collision free path is planed.
使用金硅势垒探测器及热电式致冷器构成传感器，并利用无模型控制器进行控制，实现气体露点的在线检测。
The sensor is composed of pyroelectric refrigerator and semiconductor detector, and controlled by a operator without model, In this way the air dew-point can be measured on line.
论文在介绍常用的无位置传感器无刷直流电机控制方法的基础上，详细分析了“反电动势法”无刷直流电机控制原理。
In this paper the common methods of sensorless control of BLDCM are introduced, and the principle of back-EMF method is illustrated in detail.
反电动势法是检测无刷直流电机转子位置用的最简单、最常用的方法。
The "Back-EMF" method is the simplest and most popular method for detecting the rotor position in trapezoidal brushless dc motor.
本文对于反电动势波形接近正弦的永磁无刷直流电动机，提出一种基于六个离散位置信号的自同步svpwm控制方法，用于抑制电磁转矩脉动。
For the BLDCM which has a sinusoidal back EMF, this paper presents a self-synchronous SVPWM control method using six discrete position signals for minimizing torque ripple.
采用有空气辅助的系统以及一个额外的空气源，与采用无空气辅助的SCR系统两相比较，前者的优势比略势更显著。
It will be shown that the advantages of using an air-assisted SCR-system plus an additional air supply are much bigger than the disadvantages compared to an airless SCR system.
仿真结果表明，所提出的无网侧电动势传感器控制技术具有良好的辨识速度，且辨识精度高，系统鲁棒性强。
Simulation results show that the designed source voltage sensorless control technology has a good recognition rate, and high identification precision, a strong robustness.
方波电流驱动的BLDC电机无位置传感器控制检测转子位置的最重要方法是反电动势检测法。
Detecting back EMF is one of the most important methods for the detection of rotor position in square wave current drive BLDCM sensorless control.
台湾无籽柠檬檬树势强健，树冠圆头形，枝条粗壮，刺少而短小，新梢、嫩叶和花蕾均带紫色。
Since Taiwan seedless lemon tree potential strong, crown round head shape, stout branches, thorn little and short, new shoots, leaves and buds all takes purple.
本文采用反电动法控制永磁直流无刷电机，是通过检测反电动势过零点获得转子位置实现无传感器控制。
Using Back-EMF method to control BLDCM, it can realize sensor-free control method by detecting the zero point of EMF in this paper.
本文采用反电动法控制永磁直流无刷电机，是通过检测反电动势过零点获得转子位置实现无传感器控制。
Using Back-EMF method to control BLDCM, it can realize sensor-free control method by detecting the zero point of EMF in this paper.
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