Lub luag haujlwm tseem ceeb ntawm kev kho qhov cub muaj xws li kev txhim kho cov khoom hardness thiab hnav tsis kam, kub tsis kam thiab tshuaj tua tsis tau. Nyob rau hauv kev kho kub siab, kev kho qhov cub loj txhim kho cov khoom tawv thiab hnav tsis kam ntawm cov khoom lag luam hauv tus neeg kho tshuaj, ua rau nws muaj zog dua thiab ruaj khov. Tsis tas li ntawd, kev kho qhov cub kuj tseem tuaj yeem txhim kho qhov kub tsis kam thiab tshuaj lom neeg tiv thaiv cov khoom, ua rau cov khoom lag luam muaj kev kub ntxhov thiab tshuaj lom neeg.
Kev kho cov ncu muaj ntau cov kev siv hauv ntau qhov kev lag luam. Hauv cov khoom siv hluav taws xob tsim kho, kho ncu siv kho kom kho cov hluav taws xob los txhim kho lawv cov kev ua tau zoo thiab kev pabcuam lub neej. Hauv kev luam ntawv kev lag luam, kho roj kho tau siv los kho cov luam tawm cov teeb meem los txhim kho nws cov kev ruaj khov thiab xim xim. Hauv kev kho mob kev kho mob, kho mob ncu yog siv rau kev kho cov cuab yeej kho mob los txhim kho lawv cov kev nyab xeeb thiab kev nyab xeeb.
Tus txheej txheem ua hauj lwm ntawm kev kho qhov cub yog raws tswj qhov kub, lub sijhawm thiab txoj kev cua sov. Nws siv cov khoom siv cua sov thiab cov sensors kom ua tiav qhov ntsuas kub ua kom zoo, kom cov khoom siv kho kom haum rau qhov ntsuas kub. Lub sij hawm tswj tau yog koom nrog kev tswj qhov ntsuas kub kom tsis txhob muaj teeb meem zoo tshwm sim los ntawm kev tu ncua ntev lossis ntev dhau los. Cov cua sov hauv cua sov muaj cov txheej txheem cua sov, hluav taws xob cua sov thiab cov cua sov yog qhov muaj kev xaiv ntawm cov khoom uas kho tau.
Ntau hom kev kho ncu muaj lawv tus kheej zoo hauv daim ntawv thov. Piv txwv li, huab cua kub kub txoj kev kho roj ncu cua sov ensly los ntawm huab cua kub kub; infrared caping ncu siv hluav taws xob infrared kom sov li; Thiab Ultraviolet kho roj ncu cia siab rau ultraviolet iradiation kom cov ntaub ntawv muaj zog. Cov yam ntxwv ntawm cov kab mob uas ua tau zoo thiab ruaj khov hauv kev lag luam ntau lawm, thiab tuaj yeem txhim kho cov khoom lag luam zoo thiab ntau lawm kev ua tau zoo.
