气孔
qì​kǒng

air bubble

  • created sense approved 气孔/氣孔 · qì​kǒng · air bubble

    气孔 / 氣孔

    qì​kǒng

    air bubble

    a bubble of air or gas trapped in a solid material, such as metal during casting or welding

    由于冷却过快，铸件内部形成了一些气孔。

    noun

    created sense

  • created sense approved 气孔/氣孔 · qì​kǒng · stoma

    气孔 / 氣孔

    qì​kǒng

    stoma

    a microscopic pore on the surface of plant leaves or stems used for gas exchange

    植物通过叶片上的气孔进行呼吸和蒸腾作用。

    noun

    created sense