With constant selection and improvement of feed conversion ratios, feed intakeitself tends to be reduced over time.

随着不断变化的选择和饲料转化的改善，饲料采食量本身随着时间趋向下降。

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The conversion efficiency between the fundamental wave and the th emission is roughly constant over the length of the plasma channels.

实验研究发现三次谐波的转换效率在通道范围内基本保持不变。

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This paper introduces a new method for implementing the long time constant in the circuits of automation, apparatus, signal conversion, collecting and processing of sensor's signal, etc.

叙述了在自动控制、仪器仪表、信号变换以及传感器信号采集与处理等电路中实现大时间常数的一种新方法。

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What we need to do is get rid of the Coulomb tag that we have - that's how we measure our electron charges - charge, and so we use this epsilon nought quite often, this permativity constant of a vacuum to make that conversion.

怎么量度电子电荷,所以我们会经常用到,这个epsilon，nought记号,这是真空中的介电常数,我们还要指出,这个介电常数。

麻省理工公开课 - 化学原理课程节选