Abstract: The present disclosure relates to the technical field of skin hair regeneration, and in particular to glucohexaose and a preparation method therefor and an application thereof, and a hair regeneration preparation. The molecular structure of the glucohexaose is Man-Man-Man-Man-Glc-Glc. The gulcohexaose can specifically stimulate local macrophages to release a cytokine network mainly comprising CCL5 chemotactic factors, recruit lymphocytes mainly comprising regulatory T cells, induce an immune cascade reaction, regulate an immune microenvironment, activate rapid proliferation and differentiation of hair follicle stem cells at a hair follicle carina and at the lower end of the carina, remarkably promote periodic regeneration of hair follicles, and accelerate the process of driving the hair follicles to enter a growth period from a resting period, so as to achieve the effect of treating alopecia.

Abstract: A drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for a cutter head of a boring machine and a control method thereof are provided. The drive system includes a variable-displacement hydraulic motor group, a fixed-displacement hydraulic motor group and a variable-displacement hydraulic pump group. The variable-displacement hydraulic motor group, the fixed-displacement hydraulic motor group, and the variable-displacement hydraulic pump group are all connected to a main oil circuit of a cutter head system of the boring machine. The variable-displacement hydraulic pump group inputs flow to the main oil circuit; and, the variable-displacement hydraulic motor group and the fixed-displacement hydraulic motor group acquire flow from the main oil circuit. Displacements of the fixed-displacement hydraulic motor group and the variable-displacement hydraulic motor group are set in a way of specific displacement combination.

Abstract: A drive system with both fixed-displacement hydraulic motors and variable-displacement hydraulic motors for a cutter head of a boring machine and a control method thereof are provided. The drive system includes a variable-displacement hydraulic motor group, a fixed-displacement hydraulic motor group and a variable-displacement hydraulic pump group. The variable-displacement hydraulic motor group, the fixed-displacement hydraulic motor group, and the variable-displacement hydraulic pump group are all connected to a main oil circuit of a cutter head system of the boring machine. The variable-displacement hydraulic pump group inputs flow to the main oil circuit; and, the variable-displacement hydraulic motor group and the fixed-displacement hydraulic motor group acquire flow from the main oil circuit. Displacements of the fixed-displacement hydraulic motor group and the variable-displacement hydraulic motor group are set in a way of specific displacement combination.