Johnson bar

短语

词形变化

Johnson bars 复数 Johnson bars

释义与例句

n.
  1. 1.

    A corrugated metal bar used to reinforce concrete.

  2. 2.

    A hand lever on various vehicles.

  3. 3.

    A lever-dolly (similar to a crowbar) for moving heavy apparatus.

词源

The reinforcing bar was invented by A. L. Johnson of the St. Louis Expanded Metal Company.

来源：wiktionary