复频筛是一种新型高效的筛分设备，具有电磁振动、高频率、设备处理能力大、筛分效率高等优点。
Frequency screen is a new high efficiency machine and has the advantages of electromagnetic vibration, high frequency, high capacity and high screening efficiency.
本文对具有自动频率跟踪和反馈稳幅功能的电磁振动机械进行了研究。
The electromagnetic vibrational machine which has function of automatic frequency follow-up and stable amplitude was studied.
通过得到的固有振动频率值，并与电磁力激发的强迫振动频率值进行比较，对不同情况下鼻端引水线在运行时的安全性进行一定的分析。
The natural frequencies and frequencies of electromagnetic force of diversion water pipe are compared, the security of diversion water pipe in different running condition is analyzed.
微波：振动千兆赫兹或以上的电磁波。它是卫星通信及地面上的即时影像传送系统的播送频率。
Microwave: An electromagnetic wave that vibrates at 1GHz and above. Microwaves are the transmission frequencies used in communications satellites as well as in line-of-sight systems on earth.
微波：振动千兆赫兹或以上的电磁波。它是卫星通信及地面上的即时影像传送系统的播送频率。
Microwave: An electromagnetic wave that vibrates at 1GHz and above. Microwaves are the transmission frequencies used in communications satellites as well as in line-of-sight systems on earth.
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