双向音频传输通路

two-way transmission path two-way mirror two-way charges for cellular phones two way ring down trunk circuit two-way choice (in employment practice) path two -way selection, referring to employer and employee choosing each other in a job market transmission path of chain path crankpin path diffusion path two-way controlled transmission two-way transmission two-way pulse transmission two way transmission simultaneous two-way transmission two way data transmission path dual path transmission off-path transmission