词汇	ersatz device
释义	ersatz device 代用装置
随便看	water tight subdivision water-tight subdivision watertight sub-division arrangement watertight subdivision bulkhead watertight submersible casing watertight-submersible casing watertight suit watertight switch water tight switch water-tight switch watertight system water tight tank water-tight tank watertight test water tight test water-tight test watertight test instrument watertight transducer watertight transverse bulkhead watertight trunk watertight type water tight type water-tight type water-tight type motor watertight vessel