The technique of orthogonal curve-linear grid generation is used to establish the mathematical model for the open diversion channel with two embankments in river blocking.

Methods: the two-electrode voltage clamp recording technique was used to observe the ligand-gated and voltage-gated ion channel currents expressed in Xenopus laevis oocytes without follicles.

Aiming at the issues, the paper presents two methods, the multi-channel non-gapped sampling technique on-line and recursive FFT algorithm.