?可卸叶片    loose propeller (or detachable) blade

?游轮    loose pulley

?自由液面    loose water (or free surface)

?罗远,远航仪    loran

?罗远接收机    Loran receiver

?罗远站    loran station

?损失,损耗    loss

?减[少]浮[力]法    loss (or lost) buoyancy method

?无效运动,失位    lost motion

?扩音器,扬声器    loudspeaker

?休息室    lounge

?乳形通风口    louvre (or louver)

?低合金钢    low alloy steel

?低碳钢    low carbon steel

?低频疲劳    low cycle fatigue

?低度火焰蔓延    low flame spread

?低热值    low heat value

?低氢焊条    low hydrogen electrode

?低压    low pressure

?低压冷却器    low pressure cooler

?低压缸    low pressure cylinder

?低压引擎    low pressure engine

?低压加热器    low pressure heater

?低压蒸汽    low pressure steam

?低压蒸气产生器    low pressure steam generator (LPSG)

?低压柜    low pressure tank

?低压涡轮机    low pressure turbine

?低位海水吸入阀    low sea suction valve

?低速[率]    low speed

?下吸入阀    low suction valve

?低温退火    low temperature annealing

?低温腐蚀    low temperature corrosion

?低温脆性    low temperature embrittlement

?低温钢    low temperature steel

?低温应力消除    low temperature stress relieving

?低温焊接    low temperature welding

?低[电]压    low tension

?低压电池系统    low voltage battery system

?低潮,低水位    low water

?低水位警报器    low water alarm

?低水位    low water level

?低水位警报器    low water level alarm