propwash deflection unit

短语

词形变化

propwash deflection units 复数 propwash deflection units

别名

PDU

释义与例句

n.
  1. 1.

    A device placed over or behind the propeller of a boat to deflect its prop wash downward as a very effective form of agitation dredging, primarily used by salvors to remove mud or sand from shallow-water shipwrecks.