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同样，规模经济的概念也被植入了向来被对效率增益鲜有兴趣的专业工作者所掌控着的尖端服务业。
They are also pushing the logic of economies of scale into sophisticated services that have traditionally been dominated by professionals who have little interest in efficiency gains.
在50伏特直流电供电情况下，其最小增益为9.0 dB，而最低集电极效率为40%（>45%的典型值）。
It is designed to have a minimum gain of 9.0 dB with 40 percent minimum collector efficiency (>45 percent typical) on a 50VDC supply.
本文讨论了调幅系数为任意值的调幅波，给出了它的表达式、频谱及调幅系数、调制效率和信噪比增益的计算公式。
The amplitude modulated wave with any modulation factor is discussed in this paper. Its expression, spectrum and formula of the modulation factor, modulation efficiency, SNR gain are given.
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