Ethuluzini lomshini, kunengxenye eyenziwe ngezinduku zensimbi ezincane nezinde.Ingaphezulu elinesiphetho esiphakeme, kanti eminye inemicu.Ngokuvamile, intambo ethuluzini lomshini ibizwa ngokuthi isikulufu sokuhola.1. Ngokwezinga likazwelonke le-GB/T17587.3-1998 kanye nezibonelo zokusetshenziswa kwayo, ibhola sc...
Funda kabanzi