Cov xim ntawm cov ntawv ci kub yog ib qho ntawm cov khoom uas cuam tshuam rau nws cov kav ntev. Feem ntau, cov ntawv ci kub muaj qhov cuam tshuam muaj zog thiab tsis yooj yim rau ploj. Txawm hais tias nws raug tshav ntuj ntev, nws yuav tsis cuam tshuam loj heev. Yog li ntawd, cov xim ntawm cov ntawv ci kub yog qhov ruaj khov heev.
Cov ntawv ci kub yog ib hom khoom siv kho kom zoo nkauj. Nws yog siv los ua kom qhov chaw ntawm cov khoom zoo nkauj thiab zoo nkauj. Nws feem ntau yog siv los kho cov khoom tawv, tsom iav, hniav nyiaj hniav kub, watches thiab lwm yam khoom. Tsis tas li ntawd, nws kuj yog siv rau phau ntawv npog, hnab ntawv, daim npav tos txais, hnab ntawv thiab lwm yam ntim khoom zoo nkauj.
Cov ntawv nyiaj kub yog ib yam khoom siv hlau. Nws muaj qhov ci ntsa iab thiab ci ntsa iab thiab yog qhov muag heev. Nws kuj yog ruaj thiab resistant rau hnav thiab tsim kua muag. Cov ntawv ci kub tsis yooj yim kom ploj mus, txawm tias tom qab lub hnub raug lub hnub ntev, nws cov xim yuav zoo li qub. Nws tuaj yeem tiv taus ib puag ncig hnyav thiab tsis yooj yim corroded los ntawm acid thiab alkali.
Tsis tas li ntawd, cov ntawv kub kub muaj cov nyhuv tshwj xeeb los tiv thaiv oxidation, uas tuaj yeem tiv thaiv kom tsis txhob muaj huab cua yooj yim corroded. Yog li ntawd, nws tseem tuaj yeem tswj hwm nws cov xim qub rau lub sijhawm ntev, thiab nws tsis yooj yim rau kev puas tsuaj vim siv mus ntev. Qhov no yog vim li cas cov xim ntawm cov ntawv ci kub yog qhov ruaj khov heev.
Hauv kev xaus, cov xim ntawm cov ntawv ci kub yog qhov ruaj khov, uas yog vim li cas nws tau siv dav hauv ntau lub lag luam. Cov nyhuv muaj zog muaj zog thiab tiv thaiv oxidation ntawm cov ntawv ci kub ua rau nws nrov heev ntawm cov neeg siv. Yog li ntawd, koj tuaj yeem paub tseeb tias cov xim ntawm cov ntawv nyiaj kub yuav nyob twj ywm rau tib lub sijhawm ntev.
