研究表明，无序层中的杂质散射和粗糙界面散射都能抑制系统的微分电导、平均电流和散粒噪声功率。
It is shown that the differential conductance, average current and shot noise power are suppressed by the impurities and rough interface scattering.
通过平均声压级和声功率级的测试验证了复合钢板试制的油底壳的降噪效果。
With the measurement of average sound pressure level and sound power level, the noise reduction result of the oil pan made by sandwich steel plate was proved.
用热电偶并联测量蓖麻油的平均温升值，计算出蓖麻油所吸收的热能，进而求得换能器的声功率。
Using 10-channel parallel thermocouples to measure the average temperature rise, energy absorbed by castor oil can be obtained.
一个电传打印机的带宽是300hz，信道内所传信号的平均功率与白热噪声功率的比值为3分贝，问其信道容量是多少？
What is the channel capacity for a teleprinter channel with a 300-hz bandwidth and a signal-to-noise ratio of 3 dB, where the noise is white thermal noise?
一个电传打印机的带宽是300hz，信道内所传信号的平均功率与白热噪声功率的比值为3分贝，问其信道容量是多少？
What is the channel capacity for a teleprinter channel with a 300-hz bandwidth and a signal-to-noise ratio of 3 dB, where the noise is white thermal noise?
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