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Lo lus keystone tuaj qhov twg?

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Lo lus keystone tuaj qhov twg?
Lo lus keystone tuaj qhov twg?

Video: Lo lus keystone tuaj qhov twg?

Video: Lo lus keystone tuaj qhov twg?
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Anonim

Lub npe ntawm cov ntawv xov xwm, Keystone, tej zaum tuaj los ntawm kev txiav cov pob zeb, lub pob zeb zoo nkauj txiav uas nws tus qauv yog ntawm lub pob zeb tseem ceeb. (Lub pob zeb tseem ceeb yog lub hauv paus, lub pob zeb zoo li lub pob zeb nyob rau sab saum toj ntawm lub koov uas kaw lub koov ua ke.)

lo lus keystone originated?

keystone (n.)

"pob zeb nyob nruab nrab ntawm ib lub koov (feem ntau yog lub pob zeb saum toj kawg nkaus), uas tuav lwm tus, " 1630s, qhov tseem ceeb ua ntej (1520s), los ntawm qhov tseem ceeb (n.

lo lus keystone txhais li cas?

1: daim kab txaij zoo li ntawm lub kaus mom ntawm lub koov uas xauv lwm daim rau hauv qhov chaw- saib cov duab kos. 2: ib yam dab tsi uas cuam tshuam nrog rau kev txiav txim siab txhawb nqa, lub pob zeb tseem ceeb ntawm kev coj dawb huv- L. S. Lewis.

Leej twg nrhiav tau lub pob zeb?

Nws yog qhov tseeb tias cov neeg Iyiv, Npanpiloo, Greek thiab Assyrian kev vam meej tau siv arches rau cov qauv hauv av xws li cov dej ntws thiab cov vaults. Txawm li cas los xij, nws yog Roman kev vam meej (1000 BC - 500 CE) uas thawj zaug pib siv lub pob zeb tseem ceeb (tseem hu ua lub pob zeb) hauv lawv cov arches.

Lub pob zeb tseem ceeb hauv Masonry yog dab tsi?

Ib lub pob zeb (los yog capstone) yog lub pob zeb zoo li lub pob zeb ntawm lub apex ntawm lub pob zeb masonrylos yog feem ntau puag ncig ib qho ntawm lub apex ntawm lub vault. Nyob rau hauv ob qho tib si nws yog cov khoom kawg uas tau muab tso rau hauv kev tsim kho thiab kaw tag nrho cov pob zeb mus rau hauv txoj hauj lwm, tso cai rau lub koov los yog lub vault kom hnyav.

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