2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Tus tsim lub txee Askiv thawj zaug pib siv cov dovetail sib koom ua ke nruab nrab 17 th Century ntawm cov rooj tog ntoo ntoo thiab ua qhov no los ntawm tes mus txog rau thaum xaus 19 th xyoo pua thaum lawv tau tsim los ntawm cov tshuab, feem ntau nyob rau hauv lub sijhawm Edwardian.
Thaum twg dovetail pob qij txha tsim?
Thaum kev sib koom ua ke ua ntej los rau hauv nws tus kheej, lig rau xyoo pua 17th, nws xav tias tsawg dua thiab loj dua dovetails ua rau kev sib koom ua ke. Xyoo dhau los, txawm li cas los xij, lawv tau txiav me me thiab zoo dua, nrog cov pins ntau dua.
dovetail pob qij txha pib qhov twg?
Qee qhov piv txwv ntxov tshaj plaws ntawm kev sib koom ua ke ntawm dovetail yog nyob rau hauv ancient Egyptian rooj tog entombednrog mummies yos los ntawm Thawj Dynasty, lub qhov ntxa ntawm Suav huab tais, thiab ib tug ncej zeb ntawm lub Lub Tuam Tsev Vazhappally Maha Siva hauv Is Nrias teb.
Thaum twg cov neeg tsim rooj tog tsis siv dovetail pob qij txha?
Hand-cut dovetailing yog lub neej ntawd mus txog rau xyoo 1860 thaum lub tshuab txiav cov pob qij txha raug qhia. Tab sis cov neeg tsim khoom lag luam zoo tau txuas ntxiv ua kom haum lawv cov pob qij txha los ntawm tes kom txog thaumthaum ntxov 1900s, thiab cov neeg tsim khoom hauv Tebchaws Europe txiav dovetails los ntawm tes zoo rau xyoo 1930.
Leej twg tsim lub dovetail?
Npe tom qab nws tus neeg tsim khoom, Charles Knapp, kev sib koom ua ke tau siv los ntawm 1871 txog 1900 thiab yog qhov qhia tau zoo ntawm Victorian thiab Eastlake style rooj tog. Cov kev sib koom ua ke demise tuaj raws li Colonialrooj tog style tau nrov nyob rau hauv lig 1890's. Zam hais tias cov tub rau khoom muaj dovetail pob qij txha.
Pom zoo:
Dovetail pob qij txha siv nyob qhov twg?
Dovetail pob qij txha feem ntau yog siv rau tsim lub thawv, tub rau khoom, thiab txee. Cov duab ntawm "tails thiab pins" hauv kev sib koom ua ke ua rau nws yuav luag tsis tuaj yeem tawg. Cov kua nplaum yog siv los ntxiv dag zog rau kev sib koom ua ke tab sis tsis muaj cov ntsia hlau lossis cov hlua khi uas tsim nyog.
Dab tsi ua kom pob txha pob txha ntawm cov pob qij txha?
pob txha muab cov duab, txhawb nqa, thiab qauv rau lwm cov ntaub so ntswg hauv lub cev. Nws kuj yuav pab tau cov pob qij txha. Pob txha mos kuj smoothens cov pob txha nto ntawm cov pob qij txha. Cov ntaub so ntswg dab tsi npog cov pob txha ntawm cov pob qij txha?
Puas yog pob txha pob txha pob txha zoo ib yam li meniscus?
Cov pob txha mos yog qhov tawv tab sis du npog ntawm qhov kawg ntawm cov pob txha hauv cov pob qij txha. Nws tso cai rau gliding yam tsis muaj kev tiv thaiv ntau thiab ua haujlwm nrog cov meniscus kom cushion kawg ntawm cov pob txha. Lub meniscus nyob nruab nrab ntawm lub femur thiab tibia.
Dab tsi qhov sib txawv ntawm cov pob txha pob txha thiab pob txha?
Cov pob txha pob txha yog tsim los ntawm osteons thiab tsim cov txheej txheem sab nraud ntawm txhua pob txha. Cov pob txha pob txha yog tsim los ntawm trabeculae thiab ua rau sab hauv ntawm txhua pob txha. Dab tsi yog qhov sib txawv ntawm cov pob txha pob txha thiab pob txha pob txha?
Puas yog lub pob txha pob txha pob txha pob txha?
CONCLUSIONS: vertebral endplate raug mob feem ntau pom hauv osteoporotic vertebral compression fractures. Dab tsi ua rau lub pob txha tawg? Nws yog kev xav tias, nyob rau hauv ntau qhov mob ntawm qhov mob qis qis, thawj qhov ua rau mob yog pob txha ntawm pob txha caj qaum los ntawm compression rog.
