automatic back flushing
automatic unit division
automatic change and automatic recovery device
Back filling at abutment back of Bridge or culvert
back reaming and back transportation
Back-to-Back
对头拼接
背靠背
背对背的
背靠背结构
背对背
紧接的
背向式计数器
identical unit or proportional unit of the body
time-rock unit =time-stratigraphic unit
097 Electrical Controlled Automatic Transmission
10kV standby power supply automatic switching device
2-D automatic gain control
5ZHG-25 automatic dryer
7060 automatic biochemistry analyzer
A Study on the Automatic Dispensing System