elevation and feed back system
information feed back system
Cadastral whole body system in town and village
man-made geological body system
Multi-rigidity body System
positive list system system
type of body and appearancehereditylength of body and weight of body
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
body height/standard body weight