Usages of روغنکاری کردن
ما چرخدندهها را روغنکاری میکنیم تا اصطکاک کم بشود.mâ charkhdandeh-hâ râ roghan-kâri mikonim tâ estekâk kam beshavad.
We lubricate the gears so that friction decreases.
اگر قطعهها را روغنکاری نکرده بودی، ساعت از کار میافتاد.agar qet'e-hâ râ rowghan-kâri nakarde budi, sâ'at az kâr mi-oftâd.
If you had not lubricated the parts, the watch would have stopped working.
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