?展性    malleability

?展性铸铁    malleable cast iron

?展性铸铁    malleafle cast iron

?木槌    mallet

?扶手索    man rope

?管理信息系统    management information systems (MIS)

?强制性岁检    mandatory annual survey

?心轴    mandrel

?操纵性[能]    maneuverability

?操纵    maneuvering (or manoeuvering)

?操纵能力    maneuvering ability

?操纵[用]空气    maneuvering air

?操纵用空气压缩机    maneuvering air compressor

?操纵箱    maneuvering box (or controlling box)

?操纵装置    maneuvering gear

?操纵台    maneuvering platform

?操纵用蓄气器    maneuvering reservoir

?操纵步骤    maneuvering sequence

?操纵轴    maneuvering shaft

?操纵阀    maneuvering valve

?锰青铜    manganese bronze

?锰钢    manganese steel

?锰青铜    manganess bronze

?挡浪板    manger board (or plate, or break water)

?人孔    manhole

?人孔盖    manhole cover

?人孔盖    manhole door (or cover)

?人孔加强环板    manhole ring

?歧管    manifold

?集气歧管箱    manifold box

?岐管阀    manifold valve

?马尼拉绳    Manila rope

?马尼拉绳,马尼拉缆    Manila rope

?自动操作机    manipulator

?人机操作系统    man-machine system

?载人潜水艇,载人潜水器    manned submersible

?操纵性指标    manoeuverability index

?操船模拟机    manoeuvering simulator

?操船信号灯    manoeuvre light

?液体压力计    manometer

?扶手索    manrope

?舷梯扶手绳    manrope rove