Puas yog tsob ntoo kim?

Cov txheej txheem:

Puas yog tsob ntoo kim?
Puas yog tsob ntoo kim?
Anonim

Firwood nthuav tawm ntau lub zog thiab hardness piv nrog lwm yam ntoo xws li spruce, ntoo thuv, lossis hemlock. Ntxiv mus, blemishes los yog knots tsis tsim rau fir. Txawm li cas los xij, fir kuj kim dua li lwm hom ntoo uas tau hais los saum toj no.

Puas yog ntoo pheej yig?

Fir. Feem ntau hu ua Douglas Fir, cov ntoo no muaj ib qho ncaj, hais lus nplej, thiab muaj xim liab xim rau nws. Fir feem ntau yog siv rau lub tsev; Txawm li cas los xij, nws pheej yig thiab tuaj yeem siv rau qee lub rooj tog ua ib yam.

Puas Douglas fir ib tsob ntoo kim?

Fir yog ib qho nyuaj thiab muaj zog dua li ntoo thuv, spruce lossis hemlock, thiab nws tsis tshua muaj pob los yog lwm yam blemishes. Nws yuav kim dua tab sis tej zaum tsis kim li ntoo ntoo zoo li ntoo qhib, tshwj tsis yog nws pom tseeb fir. Fir boards uas tsis muaj blemish kiag li kim dua ntoo qhib.

Puas yog tsob ntoo kim dua ntoo?

Fir feem ntau kim dua ntawm ob hom ntoo. Qhov no yog ib feem vim cov ntoo thuv tuaj yeem ua haujlwm nyuaj vim nws cov pob caus thiab nws lwm yam ntaub ntawv.

ntau npaum li cas ntoo ntoo?

Lub Ob Hlis 2018, tus nqi nruab nrab hnyav ntawm Douglas fir export cav yog $887/MBF, uas yog 26 feem pua siab dua lub Ob Hlis 2017 tus nqi ntawm $ 706 / MBF.

Pom zoo:

Nthuav cov khoom
Thaum twg yog lub npe hu ua neologism?
Nyeem ntxiv

Thaum twg yog lub npe hu ua neologism?

Thaum twg yog lub npe hu ua neologism? Thaum ib tug eponym (ib lo lus raws li lub npe ntawm ib tug neeg los yog ib qho chaw) yog siv los ua ib lo lus tshiab nyob rau hauv cov lus, nws yog ib tug neologism. Thaum Earl ntawm Sandwich cov phooj ywg pib hu nws cov khoom noj txom ncauj tshiab "

Cov ntshav oxygenated los ntawm qhov twg?
Nyeem ntxiv

Cov ntshav oxygenated los ntawm qhov twg?

Lub plawv muaj plaub chav uas cov ntshav ntws. Ntshav nkag mus rau sab xis atrium thiab dhau los ntawm txoj cai ventricle. Lub ventricle txoj cai tso cov ntshav mus rau lub ntswsqhov uas nws ua oxygenated. Cov ntshav oxygenated tau coj rov qab mus rau lub plawv los ntawm cov hlab ntsha pulmonary uas nkag mus rau sab laug atrium.

Koj puas tuaj yeem thov aia ntawm cov khoom tsis muaj nqis?
Nyeem ntxiv

Koj puas tuaj yeem thov aia ntawm cov khoom tsis muaj nqis?

Nws yuav muaj txiaj ntsig zoo rau kev xaiv tsa raws li s815 CTA 2009 yog tias thov cov peev nyiaj pab yuav muab kev pab sai dua li txiav tawm cov nqi txiav tawm lossis cov nqi cuam tshuam raug lees paub hauv cov nyiaj (piv txwv li, vim tias Nyiaj Txiag Nyiaj Txiag Txhua Xyoo (AIA) yuav them.