作さ動どう油ゆ

noun

hydraulic oil; hydraulic fluid

Technical term for the working fluid in hydraulic systems, used in machinery and industrial equipment.

• この機き械かいは作さ動どう油ゆが漏もれているので、すぐに修しゅう理りが必ひつ要ようだ。

  This machine is leaking hydraulic fluid, so it needs immediate repair.

• 作さ動どう油ゆの交こう換かんは定てい期き的てきに行おこなってください。

  Please change the hydraulic oil regularly.