?密闭灰坑    closed ash pit

?锐斜角    closed bevel

?通路(电)    closed circuit

?闭合循环    closed cycle

?密闭排气    closed exhaust

?密闭排气阀    closed exhaust valve

?封密给水系统    closed feed system

?密闭锅炉舱    closed fire room (or closed-stoke hold)

?密闭式推力[轴]承    closed type thrust bearing

?迎风航行    close-hauled

?最接近点    closest point of approach (CPA)

?关闭装置    closing appliance

?封闭接头(焊接)    closing joint

?密闭板    closing piece

?封闭板    closing plate

?最后焊接板列    closing strake

?封闭焊接    closing weld

?云状空化    cloud cavitation

?吊货灯    cluster lamp

?离合器    clutch

?离合器箱    clutch case (or box)

?离合[联结]器    clutch coupling

?离合磁铁,磁铁离合器    clutch magnet

?离合器板    clutch plate

?圆周运动试验    CMT (= circular motion test)

?中国国家标准    CNS (= Chinese National Standards, R.O.C.)

?二氧化碳冷冻机    co machine

?马车螺钉    coach screw

?弓形弹簧    coach spring

?煤    coal

?煤袋    coal bag

?煤驳[船]    coal barge

?煤斗    coal basket

?碎煤机    coal beater

?手推煤车    coal borrow

?煤箱    coal box

?煤斗    coal bucket

?煤舱    coal bunker

?燃煤锅炉    coal burning (or firing) boiler

?燃煤船    coal burning vessel

?运煤船    coal carrier (or collier)

?输煤槽,输煤管    coal chute (or shoot)