working depth and drilling depth  作业水域、工作水深与钻井深度

ball and sunk  铰链球形接头

bottom sealing of sunk-well  沉井封底

counter sunk [head ]rivet  埋头铆钉

counter sunk [head]screw  埋头螺钉

counter sunk bolt  埋头螺栓

counter sunk flat head rivet  埋头平顶铆钉

counter sunk head  埋头

counter sunk head bolt  埋头螺栓

counter sunk head rivet  埋头铆钉

counter sunk oval head rivet  埋头凸顶铆钉

counter sunk ovel head rievt  埋头凸顶铆钉

counter sunk rivet  埋头铆钉

Exogenously Sunk Cost  外生沉淀成本

hull sunk  全船下沉

investment sunk cost  投资的沉没成本

Large-sized Sunk Well  大型沉井

long-distance sunk road  长距离下沉式道路

Magnetic Sunk Wedge  磁性槽楔