Makina opopera konkriti amalimbikitsa kukhazikika pogwiritsa ntchito mphamvu zochepa zamagetsi komanso kugwiritsa ntchito mafuta, zomwe zimapindulitsa makasitomala. Makina opopera konkire amatope ndi njira yothetsera kupopera, kutumiza ndi kugwiritsa ntchito nyumba zambiri wamba, zosakanikirana, zosakanikirana komanso zapadera ...
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