fuel circuit meaning in English

燃料电路
燃料回路
燃油回路

Rubber tubing and hoses for fuel circuits for internal - combustion engines using oxidized fuels
内燃机燃油系统输送氧化燃油用纯胶管及橡胶软管
Rubber tubing and hoses for fuel circuits for internal - combustion engines using oxygenated fuels
内燃机燃油系统输送含氧燃油用纯胶管及橡胶软管
Rubber hoses and tubing for fuel circuits for internal combustion engines - specification - gasoline fuels
内燃机燃料回路用橡胶软管和管.规范.汽油燃料
Rubber tubing and hoses for fuel circuits for internal combustion engines using conventional liquid fuels
内燃机燃油系统输送常规.液体燃油用纯胶管和橡胶软管