Vacuum adakhazikika
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Vacuum adakhazikika
VIUUMUM ISUSHED PIP (VI PIPAMICE), vacuuum Jaucuouum wanyimbo (vj) imagwiritsidwa ntchito posamutsa mpweya wamadzimadzi, madzi a hitrogen, miyendo ndi lng, ngati choloweza kwambiri pamutu wamba.
