Jīqì yùnzhuǎn qián xūyào rùnhuá gège bùjiàn.
All components need to be lubricated before the machine operates.
Rùnhuá yóu kěyǐ jiǎnshǎo língjiàn zhī jiān de mócā.
Lubricating oil can reduce friction between parts.
Zhè zhǒng rùnhuájì shìyòng yú gāowēn huánjìng.
This lubricant is suitable for high-temperature environments.
