调幅

In communications, the amplitude variations of an amplitude modulate d carrier wave

在通信技术中，调幅载波的幅度变化图。

Carrier wave and modulating wave with high frequency were used to control the exciting current and frequency respectively.

可用于波流共存场多向随机波浪传播变形的模拟和预报。9。利用载波和高频调幅波分别控制励磁电流(0~15 A)和励磁频率(50~1000 Hz)的大小。

It has manual transmission, plenty of trunk space and an AM/FM stereo cassette player.

它有用手操作的传动系统，充裕的行李箱空间和调幅／调频的立体音响式收录音机。

It specifies the application of index color and FM technology in screen printing, and how to reduce moir s in screen printing with FM technology.

简述了纺织品网版调频加网印刷的基本原理，与调幅加网印刷的比较。

"In addition to commercial radio broadcasting, AM is also employed in short-wave radio broadcasts, and in transmitting the video portion of television programs."

除了商用无线电广播外，调幅还用于短波无线电广播，发送电视节目的视频部分信号。

Ft Interior Volume Rear: 38.0 cu. ft Luggage capacity: 13.7 cu. ft Performance 0-50 mph (0-80 kmh): n/a 0-60 mph (Manual / Auto): 7.8 / 9.0 sec (7.8 sec / 9.6 sec. quattro) 1/4 Mile: n/a Top estimated speed: 130 mph (203 kmh)- Electronically limited for North America Fuel Economy City (Manual/Auto): 19 / 18 mpg (19 / 18 mpg quattro) Highway (Manual/Auto): 27 / 28 mpg (26 / 27 mpg quattro) Combined (Manual/Auto): 23 / 23 mpg (22 / 21 mpg quattro) Standard Features Comfort/Convenience:· Electronic automatic climate control system, including air conditioning · Power steel sunroof · Power windows with one-touch down, lock-out for rear windows, pinch protection and one-touch up for front windows · Retained accessory power for windows and sunroof · Tinted glass, banded windshield · Power rack and pinion steering · Convenience close feature for windows and optional sunroof · Electronic cruise control with resume and speed up features · Dual power mirrors with defog feature · Electric rear window defogger · Power central locking system including trunk and fuel door; selective unlocking · Heat ducts to rear seat area · Illuminated glove box, trunk, lighter/ashtrays, engine compartment · Ignition key with integral light · Dual illuminated vanity mirrors · 4-passenger assist handles · Time delay interior light · Anti-theft vehicle alarm system · Cupholders · Fuel cap hanger feature Interior/Seating and trim:· 8-way power front seats with manual lumbar adjustment · Front seat map pockets · Facette weave cloth · Leather-wrapped steering wheel · Fold down rear-center armrest with storage container · Rear center armrest · Full length center console with forward storage bin, including cupholders · 60/40 split/fold rear seat with locking seat back · Genuine burled walnut wood trim for dash, door panels and console · Front and rear carpet floor mats Instrumentation:· Backlit instrument cluster, red illumination · Tachometer and electric speedometer · Analog clock · Outside temperature gauge · Trip odometer · Coolant temperature gauge · Oil temperature gauge · Voltmeter · Intermittent wiper mode Audio Systems:· AM/FM stereo cassette radio with anti-theft · 6-speaker sound package · Rear window antenna · Preparation wiring for CD changer · Preparation for cellular phone Exterior:· Aerodynamic 3-way halogen headlights · 5 mph bumpers, painted in body color · Body color, protective side moldings · Retractable headlight washer system · Body color, flush door handles · Body color, outside mirror: right convex, left side flat · Front fog lights · Rear fog light (integrated with left light cluster) Safety:· Anti-lock brake system · Driver and front passenger air bag supplemental restraints · Automatic self-tensioning front seat belt system · Rear outboard 3-point seat belts with comfort adjustment · Rear center lap safety belt with retractor · Child-safety rear door locks

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Based on the second-order statistics, cyclic autocorrelation function , a method of demodulation is deduced.

推导了二阶循环统计量——循环自相关函数的解调方法，该方法通过搜索循环频率而将调制源分离在循环域的低频段，并且调幅和调频信号有不同的解调结果。

The AM estimator is based on the first and the second absolute moments.

这种调幅估计方法是基于一阶和二阶绝对时刻。

According to the system specification of DRM given by ETSI, the channel coding scheme applied to the system is a set of combination schemes of the multilevel coding and modulation.

根据欧洲电信标准化委员会提供的数字调幅广播系统说明书可知，该系统采用的信道编码方案是一套基于删除卷积码的多级编码和调制的组合方案，它机制灵活，可以针对不同的数据通道和不同的信道条件选择不同码率的分量码和星座图。

First, mathematic description of FOG's modulation signal was analyzed, and then three methods for producing modulation signal with adjustable amplitude were discussed, which are direct wave table method, multiplicative amplitude adjusting method and two-level wave table method. Their advantage and disadvantage were analyzed.

首先对光纤陀螺调制信号的数学描述进行了分析，在此基础上提出了三种幅度可调调制信号的产生方法，即直接波表法、乘法调幅法、两级波表法，并分析了三种方法各自的优缺点。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。