In this paper, we divided the double frequency crystal into numerous small double frequency units and derived the harmonic power and the double frequency efficiency in each unit.

本文中将倍频晶体分割成无数多个小倍频单元，并导出每个倍频单元中的谐波功率与倍频效率。

youdao

The frequency area of big caliber vertex flow transducer is small, frequency unit of flow is very big, the change of ration meter display is very large what confine its wide use.

大口径涡街传感器频率范围很小，单位频率的对应流量很大，配套仪表显示流量的波动大，限制了大口径涡街传感器应用。

youdao

Isolation of the T/R switch must be considered when the high power transmitter is connected to the low power radio frequency unit by T/R switch as the radar antennas are reciprocal.

雷达天线往往收发共用，通过收发开关连接高功率发射单元和低功率射频单元要考虑收发开关的隔离度问题。

youdao

The base unit transmits signals across an unused FM frequency, and the user can select from numerous radio stations with the tuner, which also has a "Tell Me More" button that can be used to obtain more information about songs being broadcast, or even to purchase MP3 files or CDs.

CNN: Sonicbox brings Net radio into your living room