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A volcano emits smoke, lava and ashes.
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火山喷射出烟、 熔岩和灰烬. |
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A voltage signal Rect(tt/Pw) added by zero mean Uniform noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a
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以加上均匀杂讯之方波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal Rect(tt/Pw) multiplied by zero mean Uniform noise is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties o
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以乘上均匀杂讯之方波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal Tria(tt/Pw) added by Normal noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random proc
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以加上准常态杂讯之三角波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal Tria(tt/Pw) added by zero mean Uniform noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a
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以加上均匀杂讯之三角波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal cos(2*pi*Freq*tt), added by Normal noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a rand
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以加上准常态杂讯之弦波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal cos(2*pi*Freq*tt), freq = 2(MHz) added by Normal noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain proper
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以加上准常态杂讯之弦波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal uexp(tt/Pw) added by zero mean Uniform noise. is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a
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以加上均匀杂讯之单边递减波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltage signal uexp(tt/Pw) multiplied by Normal noise is demonstrated for 2-D dependence of the waveform on time and trials and 2-D dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random
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以乘上准常态杂讯之单边递减波电压讯号为例，图示含有杂讯电压讯号其波形随时间及试验之二维变动及频谱随频率及试验之二维变动，显示杂讯与讯号之随机过程在时域与频域之不同特性。 |
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A voltmeter connected across A to B would read 10 volts.
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两点间的电压表的读数应为10伏。 |
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A volume of learned articles or essays by colleagues and admirers, serving as a tribute or memorial especially to a scholar.
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纪念文集同事或仰慕者写的尤指送给一位学者作为礼物或纪念的学术性论文或散文的汇编 |
