滚珠 (gǔn zhū) — steel ball (used in ball bearings)

뜻

예문

• 这批滚珠的直径是五毫米。
  Zhè pī gǔn zhū de zhí jìng shì wǔ háo mǐ.
  The diameter of this batch of steel balls is five millimeters.
• 我们需要更换轴承里的滚珠。
  Wǒ men xū yào gēng huàn zhóu chéng lǐ de gǔn zhū.
  We need to replace the steel balls in the bearing.
• 这种机器用了很多精密滚珠。
  Zhè zhǒng jī qì yòng le hěn duō jīng mì gǔn zhū.
  This type of machine uses many precision steel balls.