Mushroom Ventilator

버섯형통풍통

Multiple Operater Welding Machine

복식용접기

MIG Welding, Inert Gas Shielded Metal-arc Welding

불활성가스 금속 아크용접

Mud Box

뻘거르개상자

Merchant Ship

상선

Marine Engineer

선박기관사

Marine Fire Fighting System

선박소방설비

Mritime Sanitation Device, Maritime Sewage Treatment System

선박오물처리장치

Marine Boiler

선박용보일러

Marine Turbine

선박용터빈