"The three hydraulic reservoirs are pressurized to 45-50 psi by the pneumatic system to assure a positive flow of fluid to the pumps ." The above sentence means "3个液压油箱被液压系统增压到45-50 psi来保证正压油流到达各个泵".
A.1正确答案A
"The three hydraulic reservoirs are pressurized to 45-50 psi by the pneumatic system to assure a positive flow of fluid to the pumps ." The above sentence means "3个液压油箱被液压系统增压到45-50 psi来保证正压油流到达各个泵".
A.1正确答案A
