Iindaba
-
Ukuphuhliswa kwepleyiti yentsimbi efakwe umbala
Ekupheleni kweminyaka yoo-1980, iChina yaqala ukwakha iiyunithi zokugquma ngombala ngokulandelelanayo.Uninzi lwezi yunithi zakhiwe kwizityalo zentsimbi kunye nentsimbi kunye namaphulo adibeneyo, kunye nezixhobo zenkqubo yokugquma umbala zazisuka kumazwe angaphandle.Ngo-2005, ibhodi egqunywe ngemibala yasekhaya yayifikelele kwi-1.73 yezigidi zeetoni,...Funda ngokugqithisileyo -
Zifundise indlela yokwahlula phakathi kwabavelisi bokwenyani nabobuxoki
Eyona ndlela ithe ngqo yokuchonga ukuba ngaba ishishini lingumenzi wokwenyani kukujonga ilayisenisi yeshishini.Ilayisensi yoshishino inokusinika ulwazi oluninzi: eyokuqala kukujonga inkunzi ebhalisiweyo.Isixa semali eyinkunzi ebhalisiweyo sinokubonisa ngokuthe ngqo amandla eshishini...Funda ngokugqithisileyo -
Umahluko phakathi kwentsimbi yekhabhoni eqhelekileyo kunye nentsimbi engenasici
Intsimbi yekhabhoni eqhelekileyo, ekwabizwa ngokuba yi-iron carbon alloy, yohlulwe ibe yintsimbi ephantsi yekhabhoni (eya kubizwa ngokuba yintsimbi ekhandiweyo), intsimbi yekhabhoni ephakathi kunye nentsimbi ephosweyo ngokomxholo wekhabhoni.Ngokubanzi, abo banomxholo wekhabhoni ongaphantsi kwe-0.2% babizwa ngokuba yintsimbi ephantsi yekhabhoni, eyaziwa ngokuba yintsimbi ekhandiweyo ...Funda ngokugqithisileyo -
Indlela yokwahlula ubungakanani kunye neenkcukacha zombhobho wensimbi engenasici
Ukusukela ngeminyaka yoo-1930s, kunye nophuhliso olukhawulezayo lwemveliso eqengqelekayo yentsimbi egqwesileyo kunye nenkqubela phambili ye-welding kunye nokuhlola itekhnoloji, umgangatho we-weld uye waphuculwa ngokuqhubekayo, iintlobo kunye neenkcukacha zentsimbi edibeneyo yombhobho odityanisiweyo ...Funda ngokugqithisileyo -
Izinto ezichaphazela ubomi benkonzo yamacwecwe afakwe umbala
Ikhoyili ecatshulwe ngombala inobunzima obulula, inkangeleko entle kunye nokuxhathisa okuhle kokubola.Isetyenziswa ikakhulu kushishino lwentengiso, ishishini lokwakha, ishishini lezixhobo zasekhaya, ishishini lezixhobo zombane, ishishini lefenitshala kunye neshishini lezothutho.Ngokutsho kosetyenziso olwahlukeneyo olusingqongileyo...Funda ngokugqithisileyo -
Indlela yokucoca ipleyiti ye-aluminiyam ebrashiweyo
Ipleyiti yealuminiyam enepateni sisixhobo sokwakha esiqhelekileyo, kwaye inkqubo yayo yahlulwe ikakhulu yangamacandelo amathathu: i-de-esterification, ilitye lokusila, kunye nokuhlamba amanzi.Phakathi kwabo, ukuhlamba amanzi yinkqubo ebaluleke kakhulu.Ukuze kuqinisekiswe umgangatho womphezulu kunye nomgangatho we-welding ye-aluminium ...Funda ngokugqithisileyo -
Intsimbi yaseTshayina ihlawulisa amaxabiso amatsha eManyano yaseYurophu.
Amaxesha emali yaseUnited Kingdom nge-31 kaJanuwari: Intsimbi yaseTshayina ihlawulisa amaxabiso amatsha eManyano yaseYurophu.Ukuze kusetyenziswe iindlela ezinamandla zokujongana nengxaki yoshishino lwentsimbi ekhulayo ye-EU.Kwijenali esemthethweni ye-European Union (Ijenali esemthethweni yeManyano yaseYurophu) kutshanje ikhuphe i...Funda ngokugqithisileyo
Bhala umyalezo wakho apha kwaye uwuthumele kuthi
