angles back to back 背对背角钢
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 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
back to back testing 骨干中枢
back to back tug 拉背
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