Yuav ua li cas ua txhaum cai ua tshuaj tua kab mob?

Cov txheej txheem:

Yuav ua li cas ua txhaum cai ua tshuaj tua kab mob?
Yuav ua li cas ua txhaum cai ua tshuaj tua kab mob?

Video: Yuav ua li cas ua txhaum cai ua tshuaj tua kab mob?

Video: Yuav ua li cas ua txhaum cai ua tshuaj tua kab mob?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov neeg ua phem qee zaum siv tshuaj, xws li oxidizing lossis tshuaj dawb, tshem tawm kev sau ntawv Cov tshuaj no cuam tshuam nrog tus number case los ntawm kev tsim cov xim tsis muaj xim, thiab kev sau ntawv ploj mus. … Txawm hais tias lub laser vaporizes tus number case, nws kuj hlawv cov ntawv fibers nyob ze, thiab qhov kev puas tsuaj tshwm nyob rau hauv lub tshuab tsom.

Yuav ua li cas tshuaj tua kab mob ua haujlwm?

Tshuaj erasure

Tshuaj tua kab mob tsuas yog txheej txheem ntawm bleaching xim ntawm tus number case los ntawm kev hloov cov xim pleev xim rau hauv cov xim tsis muaj xim. Thiab tus cwj mem nws tus kheej tseem nyob hauv daim ntawv hauv daim ntawv tsis pom. Kev tshem tshuaj lom neeg kuj tuaj yeem ua tiav nrog cov kuab tshuaj tsim nyog.

Yuav ua li cas yog tshuaj tua kab mob?

Kev siv tshuaj xws li kuab tshuaj, tshuaj dawb, lossis cov khoom lag luam xws li cov kua dej nres kom tshem tawm cov ntawv luam tawm lossis sau rau ntawm daim ntawv.

Yuav ua li cas hloov pauv hauv kev dag?

Kev hloov pauv suav nrog erasures, charring, indented sau, ntxiv cov cim, nrog rau kev tsis lees paub, thaum obliterations yog qhov overwriting ntawm cov ntawv nrog lwm yam khoom.

Yuav ua li cas txhawm rau txheeb xyuas cov ntawv sau tsis raug?

Kev siv pom thiab nyob ze infrared spectroscopy imaging yog cov qauv siv rau kev txiav txim siab ntawm kev sau ntawv obliterated. … Feem ntau obliterated sau yog kuaj pom siv spectroscopic duab nyob rau hauv uas lub teeb kis los ntawm obliterated sau ntawv thiab yog absorbed los ntawm overwritten los yog masked sau.

Pom zoo: