卧式内燃燃油燃气锅炉
Horizontal Internal-combustion oil-fired (gas) boiler
带真空泵的燃油泵
fuel pump with vacuum pump
低燃油油面警报器开关
low fuel level alarm switch
低燃油油面警告灯
low fuel level warning lamp
第一号燃油泵出油口
number one fuel pump outlet
电动燃油泵压力试验
electric fuel pump pressure test