Ngokujwayelekile lisetshenziswa ekukhiqizeni noma ocwaningweni lwesayensi, igumbi elihlanzekile liyindawo elawulwayo enezinga eliphansi lokungcolisa umoya njengothuli, amagciwane ahamba emoyeni, izinhlayiya ze-aerosol, nomhwamuko wamakhemikhali. Eqinisweni, igumbi elihlanzekile line ...
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