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Umahluko phakathi komgca omkhulu wokuloba ihashe kunye nomgca oqhelekileyo udla ngokuba ngamanqanaba ama-3
Umahluko phakathi komgca omkhulu wokuloba ihashe kunye nomgca wesiqhelo udla ngokuba kumanqanaba ama-3: ① Izinto ezizimbini zahlukile.Umgca wehashe weDali luhlobo oluphezulu lwe-polyethylene fiber line.Amandla ayo acinezelayo aphindwe kabini kune-carbon fiber.Yifiber eneyona c...Funda ngokugqithisileyo -
Ngaba ufanele ukhethe umbambeli wokuwa okanye intambo yokhuseleko lokusebenza kwiindawo eziphakamileyo?
Kwinkqubo yokusebenza kwiindawo eziphakamileyo, abantu bahlala bethatha amanyathelo athile okhuseleko ukuze bathintele ukuwa ngengozi.Phakathi kwabo, ababanjwa abawayo kunye neentambo zokhuseleko zezona zixhobo ziqhelekileyo zokukhusela.Abahlobo bahlala benohlobo lokubhideka, ngaba ndikhethe into yokubamba ukuwa okanye intambo yokhuseleko?...Funda ngokugqithisileyo -
Ukubaluleka kweentambo zentente
Intambo yentente lulungiselelo oluqhelekileyo lwentente, kodwa ngenxa yokuba abantu abaninzi bengakwazi ukubaluleka kweentambo zentente, abantu abaninzi abazizi iintambo zentente xa besiya kumisa intente.Nokuba bayakwenza, abayi kuzisebenzisa.Intambo yentente, ekwabizwa ngokuba yintambo yokuthintela umoya, isetyenziswa kakhulu...Funda ngokugqithisileyo -
Kutheni i-aramid ibiza kangaka?
I-Aramid, eyaziwa ngokuba yintsinga yepolyamide enuka kamnandi, yenye yezona ntsinga ezintathu eziphezulu zehlabathi zobuchwepheshe obuphezulu (i-carbon fiber, i-aramid, kunye nokuqina okuphezulu, i-high-modulus polyethylene fiber) namhlanje.Isetyenziswa ngokubanzi kwizinto ezidibeneyo, iimveliso zembumbulu, izixhobo zokwakha, iimpahla ezikhethekileyo zokukhusela, i-elec ...Funda ngokugqithisileyo -
I-2 kufuneka ibe nemigangatho yebhanti yokhuseleko
Ibhanti yokhuseleko lomsebenzi ophezulu isetyenziselwa ukukhusela ukhuseleko lwabasebenzi abachaphazelekayo kukuthintela ukuwa kwabasebenzi abasebenza kwizixhobo zokukhusela ukuphakama.Okukhona ukuwa okuphezulu, kokukhona kuchaphazeleka ngakumbi, ibhanti lokhuseleko kufuneka liphumeze imigangatho emi-2: ①Inokuthintela ukuwa kwih...Funda ngokugqithisileyo -
Iimpawu ezi-3 ezibalulekileyo zokukhetha intambo yokhuseleko olukumgangatho ophezulu
Namhlanje intambo yokhuseleko yoluhlu olubanzi, isimbo ezahlukahlukeneyo, emva koko ubambe iindlela ezithile zokuthenga kunye nokukhetha intambo yokhuseleko iluncedo kakhulu, namhlanje ndikhokelela abafana abakhulu ukuba bafunde oku kulandelayo indlela yokukhetha ukufaka intambo yokhuseleko.Okokuqala, kufuneka sibambe iimpawu ezisisiseko zesecurri ethile...Funda ngokugqithisileyo