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
analysis layer by layer
computation layer by layer
concretion layer by layer
Coupling between ductile layer and brittle layer
equivalent variable velocity layer by layer
grouting layer by layer
interfacial layer transition layer
Layer by layer assembly
LBL(layer-by-layer)自组装
层层组装