Cov tshuaj pov tseg kho mob, ntxiv rau cov chav kawm paub txaus ntshai feem ntau, nws muaj nws qhov kev ntsuas qib. Nws yog qhia nyob rau hauv cov tsiaj ntawv, kuj qhia txog hom thiab kev cuam tshuam ntawm ib puag ncig. Qhov phom sij ntawm kev rho tawm nce nrog txhua tsab ntawv - los ntawm "A" rau "D".
Cov chav kawm pov tseg phom sij
- Muaj tsib chav kawm txog kev phom sij rau kev pov tseg kho mob. Ntau txoj kev, qhov kev suav qhab nia rov ua dua cov chav kawm dav dav rau cov khib nyiab, tab sis muaj cov yam ntxwv tshwj xeeb.
- Chav Kawm "A": qhov no yog pov tseg ntawm cov tsev kho mob uas tsis ua rau muaj kev phom sij rau ib puag ncig thiab tib neeg. Qhov no suav nrog daim ntawv, zaub mov pov tseg, thiab lwm yam. Txhua yam no tuaj yeem pov rau hauv cov thoob khib nyiab tsis tu ncua.
- Chav "B": pawg no suav nrog cov khoom uas tau chwv tus neeg mob, nrog rau cov khib nyiab uas tau txais los ntawm kev kho mob thiab kev ua haujlwm. Lawv raug coj mus pov tseg hauv av tshwj xeeb.
- Chav "B": cov no yog cov khoom uas tau chwv nrog cov neeg mob, uas tuaj yeem lav tias yuav tiv thaiv ib hom mob twg. Nws kuj suav nrog cov khib nyiab los ntawm lub chaw soj nstuam, vim nws yog qhov feem ntau yuav muaj kev paug. Xws li "khib nyiab" yog suav nrog kev suav sau thiab tshwj xeeb pov tseg.
- Chav Kawm "D": ntawm no - ntau yam pov tseg muaj kev lag luam. Piv txwv li: tus ntsuas kub, ntsuas tshuaj, tshuaj tua kab mob, thiab lwm yam. Lawv yuav tsis nyob nrog tus neeg mob txhua lub sijhawm, tabsis lawv tus kheej yog qhov txaus ntshai. Lawv raug thauj thiab coj mus pov tseg los ntawm cov neeg ua haujlwm tshwj xeeb tau kawm.
- Chav "D": cov pab pawg no suav nrog cov tshuaj kho mob thiab cov khoom siv uas muaj hluav taws xob ntxiv tom qab. Cov khib nyiab no, txawm tias thaum lub sijhawm cia ib ntus, yuav tsum muab tso rau hauv cov hlau ntim cov khoom ntim.
Chav kawm "D" yog dab tsi?
Hoob D hluav taws xob khib nyiab pov tseg tsis yooj yim dua. Lawv sib koom ua ke tag nrho cov khoom pov tseg kho mob me me, tab sis lawv muaj nyob hauv yuav luag txhua lub tsev kho mob. Ua ntej tshaj plaws, cov no yog siv tau rau kev soj ntsuam cov khoom siv, xws li xoo hluav taws xob xoo.
Cov hluav taws xob me me tau dav siv hauv kev kho mob. Cov tshuab ua haujlwm txhawm rau nqa cov tshuaj fluoroscopy, cov khoom siv fluorographic, gamma tomographs thiab lwm yam kev kuaj mob "tsaus muag" me ntsis. Tias yog vim li cas fluorography tsis pom zoo kom ua ntau dua ib xyoos ib zaug, thiab thaum tsim cov duab xoo hluav taws xob ntawm tus hniav, tus neeg mob lub hauv siab tau npog nrog lub hnyav rubberized casing.
Cov khoom siv ntawm cov khoom siv uas tsis tawm, nrog rau cov ntaub ntawv siv rau kev ua haujlwm, yuav raug suav tshwj xeeb. Txhua lub koom haum kho mob muaj cov ntawv xov xwm uas sau txog qhov ntau npaum li cas thiab hom pov tseg tsim tawm, nrog rau lub sijhawm nws tau xa mus pov tseg. Ua ntej rhuav tshem lossis khaws cia, chav kawm "D" yog ntim rau hauv cov hlau ntim ntim nrog cov cement.
Yuav muab cov khoom pov tseg "D" pov tseg li cas?
"Flickering" cov khoom thiab tshuaj ntawm cov chaw kho mob yog thauj hauv cov tsheb tshwj xeeb. Ua ntej pov tseg, kev soj ntsuam ntawm cov khib nyiab pov tseg yog kwv yees kom paub cov lus muaj pes tsawg leeg, nrog rau lub zog ntawm cov hluav taws xob tawg.
Cov khib nyiab yog suav tias yog kev phom sij hauv chav kawm "D" tsuav yog muaj cov hluav taws xob no muaj. Cov khib nyiab los ntawm tsev kho mob tsis yog cov tshuaj tiv thaiv los ntawm lub chaw tsim hluav taws xob nuclear, yog li lub sijhawm lwj ntawm radioisotopes yog luv heev. Feem ntau, koj tuaj yeem tos kom txog thaum cov pov tseg kom tsis txhob "muab tso" los ntawm qhov muab tso rau hauv qhov chaw nyob ib ntus hauv cov av tshwj xeeb. Thaum cov hluav taws xob tom qab raug rov los rau hauv qhov qub, qhov khib nyiab pov tseg ntawm cov khib nyiab ib txwm pov tseg.
