nkhani

Kuyeretsa mbewu ndi gawo loyamba pakukonza mbewu.Chifukwa cha mitundu yosiyanasiyana ya zonyansa mu njere, makina oyenera oyeretsera amayenera kusankhidwa.Malingana ndi katundu wosiyana, akhoza kugawidwa mu zonyansa zazikulu ndi zonyansa zazing'ono malinga ndi miyeso ya geometric;Malingana ndi kutalika, pali zonyansa zazitali ndi zonyansa zazing'ono;Malingana ndi kulemera kwake, pali zonyansa zopepuka ndi zonyansa zolemera.Ngakhale zili zodetsedwa pang'ono, zimatha kukhalabe ndi kusiyana kwa kulemera ndi kachulukidwe (kukokera kwapadera).Kusiyanitsa kwamtundu kulinso mtundu wakusayera kwa mbeu.
Makhalidwe osiyanasiyana a zonyansa amatengera njira zosiyanasiyana zochotsera.Njira zosiyanasiyana zochotsera zimafunikira njira zosiyanasiyana.Mfundo zotsatirazi zimatengedwa nthawi zambiri.(1) Ngati zonyansazo zili zopepuka kuposa za mbeu yabwinobwino, ndipo kukula kwake kuli kosiyana ndi kwa mbewu zanthawi zonse, makina otsuka aspire ayenera kugwiritsidwa ntchito.(2) Pochotsa zonyansa zazitali kapena zazifupi zomwe mwachiwonekere zimasiyana muutali ndi kukula kwake ndipo sizingachotsedwe pambuyo pokonza kupatukana kwa mpweya, cholekanitsa chamtundu wa socket chidzagwiritsidwa ntchito.(3) Pambuyo pokonzedwa ndi makina oyeretsa mpweya ndi makina makina oyeretsera amtundu wa socket, ukhondo wawongoleredwa bwino, ndipo kukula kwa tinthu ting'onoting'ono kuli kofanana, komabe pali masoka ouma ndi nyongolotsi zosakanikirana ndi chimanga;Mbewu zowuma ndi zofota ndi tirigu wosweka mu tirigu;Kwa njere zodyedwa ndi nyongolotsi ndi matenda mu nyemba, zonyansa zambiri zomwe zili pamwambazi ndi zonyansa (zamphamvu yokoka) zomwe zimafanana ndi mbewu zabwino zolemera ndipo zimakhala zovuta kuchotsa.Panthawi imeneyi, amafunika kutsukidwa ndi makina otsuka mphamvu yokoka.