?甲板水密型    deck watertight type

?甲板覆水,甲板上浪    deck wetness (or shipping of water)

?有甲板小艇    decked boat

?甲板被覆    decking (or deck covering )

?斜度    declivity

?减压室    decompression chamber

?减压装置    decompression device

?减压水槽    decompression tank

?减压阀    decompression valve

?装饰,装潢    decoration

?去耦合    decoupling

?递减螺距螺桨    decreasing pitch propeller

?齿根    dedendum

?齿根圆    dedendum circle

?清洁压舱水专用舱    dedicated clean ballast tank

?减[除]丈[量]空间    deducted space

?深海潜水系统    deep diving system (DDS)

?吃水限制船灯    deep draught vessel light

?深填角焊    deep fillet welding

?深肋板    deep floor

?深肋骨    deep frame

?深海作业艇    deep ocean work boat (DOWB)

?深透焊接    deep penetration welding

?深海测深锤    deep sea lead

?深海系泊    deep sea mooring

?远洋底拖网渔船    deep sea trawler

?深海测深机    deep sounding machine

?深海救难艇    deep submergence rescue vehicle (DSRV)

?深海潜水艇    deep submergence vehicle (DSV)

?深舱    deep tank

?深填角焊接    deep welding

?深井泵    deep well pump

?最深舱区划分载重线    deepest subdivision load line

?挠曲角,偏转角(燃气涡轮机)    deflection angle

?挠度计    deflectometer

?转向器,偏针仪(磁罗经)    deflector

?散焦现象(电讯)    defocusing

?变形    deformation

?变形星规,变形测量器    deformation gauge

?变形量规,变形测量器    deformation gauge

?除霜    defrost

?卸燃料    defueling