【单选题】There are eight analog signals, each of bandwidth B=2kHz. Samples of these signals are time-division-multiplexed, quantized and binary-coded. The step size Δ of the quantizer cannot be greater than 0....
【简答题】In a silica-based TLC experiment, if the migration distances of the solvent, compound A and B are 6.78, 2., and 3.57 cm, respectively, please calculate the Retardation factor of R f and Retention fa...