Unlike the better balanced straight-six or even the ultra-smooth V-12 engine, the humble four-cylinder generates an up and down vibration with a frequency of twice the crankshaft's rotational speed.
不像运行起来比它更稳定的直列六缸引擎或者极其流畅的V - 12引擎，卑微的四缸引擎会以一种比自身机轴转速高两倍的频率产生一上一下的振动。
V-BLAST (Vertical Bell Laboratories Layerd Space-Time) can be combined with OFDM to achieve high data rate transmission in frequency selective fading channels .
技术可以和OFDM技术结合以便在高的频率选择性衰落信道下提供高数据率的传输。
Results The SDNN and the frequency of P. V. C. existed obvious correlatively.
结果SDNN值和室早发生频次存在明显的昼夜节奏变化和相关性。
The thesis presents the research and design of a V-band frequency quadrupler.
本文对V波段有源倍频器进行了设计研究。
V-MOS inverter high running frequency, high efficiency, low noise.
管逆变工作频率高，高效，低噪声。
This thesis presents the design and manufacture of a V-band frequency quadrupler.
本文研究了V波段四倍频器的设计和研制方法。
This paper explores the decoding problem of the MC V-BLAST system under the downlink frequency-selective fading environment.
该文着重研究MCV - BLAST系统在下行频率选择性衰落环境中的解码问题。
In order to extend it to frequency-selective channels, a detection scheme for V-BLAST over frequency- selective channels, which is based on space-time MMSE criterion, is proposed.
提出了基于空时MMSE准则的频率选择性信道下V-BLAST检测方案，并给出了最佳均衡条件和两种自适应空时均衡算法。
The arithmetic formulas for sine wave, linear frequency modulation signal, V-style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition.
根据信号类型的定义，给出了正弦信号、线性调频信号、V型调频信号、白噪声、混响和回波信号的合成公式。
V. the hammer of the machine is made of tungsten carbonate treatment, which is firm and durable and has reduced the frequency of replacing hammer.
本机锤片采用碳化钨热处理，坚固耐用，减少了更换锤片的次数。
Two cases of troubleshooting of Shimadzu S/V AX—FAST stomach-intestine high-frequency x-ray machine system intermittent failure are introduced.
介绍岛津S/VAX—FAST遥控高频片库式医用诊断X线系统二例少见间歇性故障维修实例。
The paper discusses the design of the experiment of low press radio-frequency plasma, using TFS and Langmuir to get V-Icurve including temperature of plasma body.
文章提出了低压射频等离子体实验设计体系，应用飞行时间谱仪和Langmuir单探针，测得Langmuir型V - I曲线，其中包括等离子体温度信息。
The paper discusses the design of the experiment of low press radio-frequency plasma, using TFS and Langmuir to get V-Icurve including temperature of plasma body.
文章提出了低压射频等离子体实验设计体系，应用飞行时间谱仪和Langmuir单探针，测得Langmuir型V - I曲线，其中包括等离子体温度信息。
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