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柯林斯高阶英汉双解学习词典释义
英英词典释义
  • Noun
    1. any tiny hole admitting passage of a liquid (fluid or gas)
    2. any small opening in the skin or outer surface of an animal
    3. a minute epidermal pore in a leaf or stem through which gases and water vapor can pass
  • Verb
    1. direct one's attention on something;
    "Please focus on your studies and not on your hobbies"
行业词典
  • 冶金学: 孔隙;
    医学: 孔,门:一个小孔;
    地质学: 孔隙;
    天文学: 小黑点;。太阳上没有半影的孤立小黑子。;
    机械: 孔隙;颗粒内或物体内的孔洞。;
    林学: 管孔;
    植物学: 管孔;又称:孔(porus );
    电工: 气孔;
    石油: 孔隙;