Gunpowder ntsuab tshuaj yej Tua cov ntawv qhia 9375
Gunpowder 9375 ntsuab tshuaj yej yog cov nto moo ntau yam ntawm cov tshuaj yej ntsuab uas muaj nws lub hauv paus hauv Suav teb. Nws yog tsim siv cov txheej txheem tshwj xeeb uas muaj cov tshuaj yej nplooj rau hauv cov pelpowder me me, uas yog li lub npe.
Lub keeb kwm ntawm Gunpowder 9375 ntsuab tshuaj yej tuaj yeem raug xa rov qab mus rau Tang dynasty nyob rau hauv Suav teb, uas yog hais luv los ntawm {} {AD. Nyob rau lub sijhawm no, tshuaj yej twb yog ib qho khoom lag luam tseem ceeb uas tau hloov pauv thiab noj ntau qhov ntau. Txawm li cas los xij, nws tsis tau kom txog thaum ming dynasty (1368-1644 s) tias gunpowder 9375 ntsuab tshuaj yej tau qhia.
Cov txheej txheem ntawm kev ua gunpowder 9375 ntsuab tshuaj yej no cuam tshuam ntau kauj ruam. Thawj kauj ruam yog sau cov tshuaj yej nplooj, uas yog tom qab ntawd kis tawm mus rau qhuav. Lub withered nplooj yog ces steamed los yog yias-kib kom txhob nres cov txheej txheem oxidation. Cov kauj ruam no yog qhov tseem ceeb heev thaum nws pab los khaws cov tsw ntuj thiab tsw qab ntawm cov tshuaj yej.
Khoom Paub meej:
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