In this paper, we describe the basic principle of polarization maintaining optical fiber and the method to measure the beat length of PM optical fiber.
本文叙述了保偏光纤能够保证传输光波偏振特性的基本原理，介绍了测量保偏光纤拍长的基本方法。
PM is an effective method to settle the problem.
项目管理是解决这一问题的有效的管理方法。
The design method for hybrid waveforms utilizing ran-dom poly-cell code pulse position modulation (PPM) and pulse-to-pulse binary sequences phase modulation (PM) is introduced in this paper.
该文提出了一种利用随机多元码脉位调制(PPM)和脉间伪随机或随机二元序列相位调制(PM)相结合的混合波形设计方法。
The USA plans to use "on-board test method" on the heavy diesel vehicle in 2007, measure and evaluate the HDV PM emission in the real world, carry out more effective control of the emission.
美国环保局计划于2007年实施重型车车载排放测试法，对重型柴油车在实际行驶过程中的排放进行测量和评估，实现更有效的控制。
The temperature spectra and frequency spectra of the damping capacity in the IM and RS/PM Al-Li alloys with the same composition were measured by the resonance method with the plate specimens.
采用板片状试样的共振法，测定了同一成分的铸锭合金（IM）和快速凝固粉末冶金（RS／PM）铝锂合金的阻尼温度谱和频率谱。
This paper introduced working principle of PM Claw-pole stepping motors, including magnetic circuits analysis and torque calculation method.
本文介绍永磁爪极步进电机的工作原理、磁路分析及转矩计算方法。
The influence of inclusion on crack Stress Intensity Factor(SIF) of Powder Metallurgy(PM) FGH 95 was investigated using singular element method with fine mesh at crack front.
采用有限元方法中的奇异单元，研究了当粉末高温合金FGH 95中存在由夹杂引起的裂纹时，夹杂对裂纹应力强度因子的影响；
This paper presented an optimization design method of Combined PM-Reluctance Motor(CPMR) for extending speed range with constant output power used in electric vehicles.
提出了一种能够在宽调速范围内实现恒功率运行的电动汽车驱动用复合转子结构永磁磁阻（CPMR）电机的最优设计方法。
This paper presents an implementation of rotor position estimation with self sensing method for permanent magnet (PM) synchronous machines.
提出了一种永磁同步电机转子位置估算的自检测方法。
The accuracy of equivalent circuit method can be effectively improved if the calculation of PM leakage permeance is accurate.
准确计算永磁漏磁导可以有效提高等效磁路法计算精度。
A simple digital demodulation method is proposed for the DPSK-PM modulated signals, which are commonly used in the satellite USB (Unified S-band) tracking telemetry and command system.
针对卫星usb测控系统中常用的DPSK - PM调制技术，设计了一种简单的数字解调方法。
There is no perfect method to calculate this kind of machine. The difference between it and ordinary PM motor is that their effective pole arc coefficients are not the same.
它与一般永磁直流电机的计算方法的差别仅在于计算极弧系数的确定。
METHODS:To detect and analyse the amount of PM in original and mixed injections by electrical sensing zone method.
方法：用电阻法检测配伍前后不同粒径微粒的数目。
The basic methods for coiled PM fiber-optic polarizer are polarization controller method and depolarization method.
线圈型保偏光纤偏振器的基本测试方法有偏振控制器法和消偏法。
The method is based on AM-AM?AM-PM characteristics of a nonlinear power amplifier and application of band -pass nonlinearity theory and digital signal processing techniques.
根据功放的实测AM-AM、AM-PM特性，采用时域分析方法，并应用带通非线性理论和数字信号处理技术，分析了宽带数字调制信号激励下的射频功率放大器非线性失真特性。
Questionnaires and multiple statistic method are used to explore the PM leadership behavior of head-teachers in Junior Middle School.
本研究采用问卷法和多元统计等方法对初中班主任的PM领导行为进行了实证研究。
It is concluded that the method can describe the effect of probabilistic character of defects on the strength and life of PM alloy, and it is proved to be valid.
分析表明：所给出的方法可以很好的表征国内工艺条件下粉末冶金材料缺陷的概率特征对强度寿命的影响，方法是有效的。
Using this method, the IP anomalies of NSI-PM on 2-d polarization body are calculated.
本文用该法计算了二维极化体上近场源法的激电异常。
This thesis studied the principles of Progressive Mesh (PM) model, and improved on the method of side error in PM, the improvement method not only in brief, but also attain good simplification result.
论文研究了渐进网格(PM)模型思想，对PM模型中的边误差计算方法进行了改进，改进后的方法不但计算简单，而且简化效果良好。
Research content and principal work have been proposed by comparing PM-OLED and AM-OLED driving method.
将目前OLED无源驱动方式（PM-OLED）与有源驱动方式（AM-OLED）进行了比较，提出本文的研究内容与主要工作。
Then studies the four categories of trainees with the help of the PM analytical method. Finally, makes some proposals on how to make use of talent.
方法是进行主成份分析，然后利用PM分析法，研究他们的四种类型，并对人才的利用，提出一些建议。
This paper proposes a general finite element (FE) based phase variable modeling method of permanent magnet (PM) linear motors for the accurate dynamic simulation of drive systems.
考虑电机非理想结构对推力的影响，建立了永磁直线电机的一般化相变量模型。
This paper proposes a general finite element (FE) based phase variable modeling method of permanent magnet (PM) linear motors for the accurate dynamic simulation of drive systems.
考虑电机非理想结构对推力的影响，建立了永磁直线电机的一般化相变量模型。
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