clack door

Noun

(mining) The removable cover of the opening giving access to a pump valve.

Japanese Meaning

（鉱業用語）ポンプ弁へ通じる開口部の取り外し可能な蓋

The miner lifted the clack door to access the pump valve and began repairs.

鉱夫はポンプ弁用の取り外し式カバーを持ち上げて弁の点検を始めた。

Sense（1）

(mining) The removable cover of the opening giving access to a pump valve.

clack doors

（ plural ）