双向双从蹄式制动器
dual two trailing shoe brake
双向双领蹄式制动器
dual two leading shoe brake
双向双偏注入
Double crossed directions
双向双套冗余
BDR Bi – Duplexed Redundancy
BDR Bi C Duplexed Redundancy
双向双通道变通径挤压
dual-directional extrusion
纤维单向缠绕
unidirectional filament winding
150 kA纵向双列预焙阳极铝电解系列
the double longitudinal series of 150 kA pre-baked anode electrolysis cell
150kA纵向双列预焙铝电解槽
150kA pre-baked anode cell arranged in double rows and end by end
HFC双向宽带网
HFC dual-way broadband network