熔浆来源于慢源，可能是玄武岩浆分异的、富挥发分富钠质的“派生岩浆”。
The magma is originated from the mantle and maybe the "derivative magma" rich in volatile and sodium, formed by the differentiation of basalt magma.
主要用于将放置在密封容器内易挥发的液体缓慢抽吸并扩散到外面空间，特别适合驱蚊液、香水、清新剂的慢扩散之用。
It is placed inside sealed container to suck volatile liquid, such as mosquito repellent liquid, perfume and freshener, slowly for outward diffusion.
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