English Dictionary

door pump

名詞

A hydraulic device attached to a door in its one end and to the doorframe in the other, performing one or more of the following functions: a) dampening the movements of the door, b) making sure that the door closes properly, and c) assisting in opening it.

日本語の意味

ドアとドアフレームに取り付けられる油圧装置。具体的には、ドアの動きを抑制して静かに閉まるように制御したり、開ける際の補助を行う役割がある。

The maintenance crew inspected the door pump to make sure the office entrance closed smoothly after every meeting.

整備班は、会議後に事務所の入口がスムーズに閉まることを確認するために油圧式ドアクローザーを点検した。

意味（1）

A hydraulic device attached to a door in its one end and to the doorframe in the other, performing one or more of the following functions: a) dampening the movements of the door, b) making sure that the door closes properly, and c) assisting in opening it.

door pumps （ plural ）