downcomer

n. 下水管, 下导管

词形变化

downcomers 复数 downcomers

释义与例句

n.
  1. 1.

    A pipe to conduct something downwards.

    A large external pipe in a water-tube boiler, carrying unheated water from the steam drum down to the water drum as part of the circulation path.

  2. 2.

    A pipe to conduct something downwards.

    A pipe for leading the hot gases from the top of a blast furnace downward to the regenerators, boilers, etc.

词源

From down + comer.

来源：wiktionary