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- Aviation industry unites on frequency protection issue. 航空业界就频率保护问题团结一致。
- Using the new tri-coaxial-cable as connecting cable in high frequency protection channel to improve the anti-jamming ability of high frequency protection was suggested. 提出了用新型三同轴电缆作高频通道连接电缆可提高高频保护抗干扰能力的建议。
- The frequency protect of overload. Call technical severs at once. Don't start the hoist before check the account. 变频器自动过载保护，立即通知专业维修人员，在查明原因前，不得启动升降机。
- The misoperation of high frequency protection caused by the electromagnetic disturbance was analyzed and the bad anti-jamming ability of existing coaxial-cable which is an important reason of misoperation in high frequency protection was pointed out. 摘要对电网高频保护通道受电磁干扰发生不正确动作现象进行了分析，指出现有同轴电缆抗干扰性能差是高频保护不正确动作的重要原因。
- radio frequency protection ratio 射频保护率
- high frequency protection against disturbance 高频保护抗干扰
- audio frequency protection ratio 声频保护比
- He varied the transmission frequency. 他变换了无线电传送的频率。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- high frequency protective device 高频保护装置
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- Analysis in effects to high frequency protection command transmission time in carrier wave channel 浅析高频保护命令载波通道传输时间的影响
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
- HIGH FREQUENCY PROTECTION SIGNAL TRANSMISSION OF LONGITUDINAL-LINK PROTECTION BY DISPATCHING AND COMMUNICATION NETWORK 利用调度通信网络实现纵联保护的高频信号传送
- Malfunction analysis and improvement measure of closed abrupt direction high frequency protection on closing the ring 系统高频保护误动作分析及改进措施
- Inquisition into Coordination of Over Frequency Protection of Generator with Over Speed Protection of Turbine 发电机过频保护与汽轮机超速保护配合问题的探讨
- Study on Phase Comparison Criterion of Operating Component in Phase Differential High Frequency Protection 相差高频保护中操作元件比相动作判据的研究
- He manipulated the frequency dial of the radio. 他开始调拨频率键盘。
