液氮 (yè dàn) — liquid nitrogen

Définition

Exemples

• 科学家用液氮来保存生物样本。
  Kē xué jiā yòng yè dàn lái bǎo cún shēng wù yàng běn.
  Scientists use liquid nitrogen to preserve biological samples.
• 液氮的温度极低，不能直接用手碰。
  yè dàn De wēn dù jí dī, bù néng zhí jiē yòng shǒu pèng.
  Liquid nitrogen is extremely cold, so you can't touch it directly with your hands.
• 这家工厂用液氮来冷却机器。
  Zhè jiā gōng chǎng yòng yè dàn lái lěng què jī qì.
  This factory uses liquid nitrogen to cool its machines.