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Ulusi wa screw ukhoza kuwoneka muzinthu zambiri zamakina. Ali ndi mapulogalamu ambiri. Pali zinthu zosiyanasiyana zokhala nazo. Akhoza kugwiritsidwa ntchito kusalaza. Zomangira, zomangira nati ndi zomata zokhala ndi zomata zimagwiritsidwa ntchito kukonza kwakanthawi gawo lina kupita ku gawo lina. Amagwiritsidwa ntchito j...Werengani zambiri»
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Pogwiritsa ntchito zomangira za ulusi wa triangular, ulusi wamtundu wa dzino ndi phula zonse zolemetsa zomwe zimatchedwa ulusi wamba, kulolerana ndi ulusi wokhazikika ndi zizindikiro za ulusi zakhala zovomerezeka, ndipo nambala ya mzere ndi njira ya ulusi, ngati sizinafotokozedwe mwanjira ina, d imodzi. . Ngati ...Werengani zambiri»
