Terms for subject Shipbuilding containing flat

English	Chinese
balance cock for flat hairspring	扁平摆夹板游丝
flat bottom barge	平底驳
flat head grooved bolt	平头带槽螺栓
flat-head machine screw	平头机螺钉
flat-head wood screw	平头木螺钉
flat-plate rudder	平板舵
flat section	平面分段
flat-sided ship	直舷船
keep flat	不可倒放
long flat-nose pliers	尖嘴钳
rough flat file	粗扁锉
smooth flat file	细扁锉
watertight flat	水密甲板
watertight flat	水密平台