正せい転てん

noun

normal rotation; forward rotation

Technical term used in machinery and engineering contexts to describe rotation in the standard or forward direction, as opposed to reverse rotation (逆転).

• モーターが正せい転てんしているか確かく認にんしてください。

  Please check whether the motor is rotating in the normal direction.

• このスイッチで正せい転てんと逆ぎゃく転てんを切きり替かえられます。

  You can switch between forward and reverse rotation with this switch.