New Motor Winding Binding tool;

The static and dynamic friction of different combinations of preadjusted bracket-archwire-ligating methods in the buccal segments were tested in the dry state.

According to assembling reinforcement,concrete mixing,transport and pouring,striping,curing and other aspects practical construction technology is introduced for secondary lining works,which provides good references for similar works.

Combined with practical work,from formwork design,fabrication and installation,assembling reinforcement,pouring and curing of concrete and other aspects construction technology of fair-faced concrete is introduced as well as quality control measures and standards in order to reduce engineering cost to acquire satisfied economic and social benefits.