proof charge

短语

词形变化

proof charges 复数 proof charges

释义与例句

n.
  1. 1.

    A charge of powder and ball, greater than the service charge, fired in an arm, as a gun or cannon, to test its strength.

    工程 政治 军事
  2. 2.

    A small charge used to test or measure the electric field created by other charges.