Tubular: iav raj - tsis muaj peev xwm tawg, ceramic raj - siab tawg muaj peev xwm;
Ua kom zoo quartz xuab zeb - rau arc extinguishing, iav raj discoloration - fuse qhia;
Internal thiab sab nraud vuam hom;
Ntxiv cov hmoov txhuas - rau vuam (qee zaum cov hlau lead yog tsim ua ntej)....
Micro: hom tsis kam, hom transistor, zaj duab xis....
Chip hom: zaj duab xis hom, multilayer monolith, kuj hom....
Lwm yam: ntxig hom, ntsia liaj qhov rooj hom, foob hom, tswb hom....
Melt qauv: round silk, ca lo lo ntxhuav, ib lo lo ntxhuav, ob lo lo ntxhuav, composite silk;
