TDM, TD, TDCU Target Data Control Unit, TDNN Time Delay Neural Network, TDOA period ambiguity solution, TDOS Tape Disk Operating System, TDIC Target Data Input Computer, TDOP Time Dilution Of Precision, TDFW Three Dimensional Four Wire, TdT-mediated nick end labeling, TDCM Transistor Driven Core Memory, TDRB Transmit Descriptor Ring Base 返回 TDD