超音波法液位元元元元元元测定
ultra-sonic method of liquid meaduremert
单发单收
single transmitter to single receiver
单发单收模式
single external illuminator and single receiver
收发单元
Transmit-Receive Unit TRU
远程终端机端ADSL收发单元
ADSL transceiver unit-remote terminal end
超单元组合—超单元—单元划分
divition of “super unit combine—super unit—unit
3-D声波波动方程
3-D acoustic wave equation
标量声波波动方程
scalar acoustic wave equation
表面声波元件
surface acoustic wave devices
超声波发射、接收器
ultrasonic emitter and receiver
超声波发射电路
ultrasonic transmitting circuit
超声波发射换能器
ultrasound transmitting transducer