应答器信息接收单元
9-(2-Hydroxy-ethoxy-methyl)-guanine
超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
25Hz微电子相敏轨道电路
25 Hz phase detecting track circuit
25Hz相敏轨道电路
25Hz phase detecting track circuit
T121-M数字无绝缘轨道电路
TI21-M digital jointless track circuit
ZPW-2000系列轨道电路
ZPW-2000 series track circuit
编码制式音频轨道电路
coding system audio-frequency track circuit
不对称高压脉冲轨道电路
and Asymmetric impulse track circuit
不对称脉冲轨道电路
Asymmetric impulse track circuit