angles back to back  背对背角钢

Back filling at abutment back of Bridge or culvert  桥涵台背回填

back reaming and back transportation  反扩反输

back to back  背至背; 背靠背; 背对背

back to back arrangement  背对背配置

Back to Back Bus  背板总线

Back to back charter  转租合同

back to back connection  背向接线; 背对背连接

Back to Back Converter Station  背靠背换流站

back to back diodes  背对背二极管

Back to back FX agreement  背靠背外汇协议

back to back houses  背对背房屋

Back to back ionization chamber  背对背电离室

Back to Back LC  背对背信用证

Back to back loan  背对背贷款

back to back repeater  背对背转发器

back to back sawtooth wave  背对背锯齿波

Back to Back Starting  背靠背启动; 背靠背起动

back to back start-up  背靠背启动