Nkhani

Mbiri ya galvanizing
ndi admin pa 22-07-29
Mu 1836, Sorel ku France adatulutsa zodziwikiratu zoyambira zambiri zopangira zitsulo poviika mu Zinc wosungunuka atatha kuyeretsa.Anapereka njirayo ndi dzina lake 'galvanizing'.Mbiri ya galvanizing imayamba zaka zoposa 300 zapitazo, pamene katswiri wa alchemist-come-chemist analota ...
Werengani zambiri
Matupi a conduit ndi zotengera
ndi admin pa 22-07-29
Ngakhale kufanana kwa mapaipi omwe amagwiritsidwa ntchito popanga mipope, zida zamagetsi zomwe zimagwiritsidwa ntchito ndi cholinga zimagwiritsidwa ntchito kuti zigwirizane ndi ngalande. kuteteza spa ...
Werengani zambiri
Mipaipi yachitsulo ndi mapaipi achitsulo omwe mawaya amagetsi ndi zingwe zimayendera
ndi admin pa 22-07-29
Mipaipi yachitsulo ndi mapaipi achitsulo omwe mawaya amagetsi ndi zingwe zimayendera.Imateteza kwambiri mawaya ndi zingwe kuti zisawonongeke komanso zovuta zilizonse.Henfen imapereka machubu abwino kwambiri omwe amakutidwa mofanana ndi zinki, divi yotentha yopaka malata mkati ndi kunja.Zapangidwa ku...
Werengani zambiri