1)lower film loop,下片环2)bottom ring,下环3)annular sclerites,annuli,sclerits,环片4)lower ring,bottom ring,座环下环5)Segment,环片、环节6)buccal tablets under lingua,舌下含片
用法例句
The replacement and innovation of bottom ring for runner chamber of 1# unit of Xijin Hydropower Plant meets great difficulties due to complicated technologies involved.
