identical unit or proportional unit of the body

time-rock unit =time-stratigraphic unit

160kA serial

232 Serial interface

2-wire serial bus

3-line serial interface

485 Serial Bus

485 serial communication

4-star-shape serial gap arrestor

a serial of twelve notes

access， serial

adaptive serial port

addition， serial

all serial AD converter

asynchronous serial communication

asynchronous serial interface

Asynchronous serial port

asynchronous serial transfer line

asynchronous serial transmission

Bi-serial-port