Zaj liv xwm
Cov phom huab cua yog ib daim ntawv thov ntawm cov thev naus laus zis thaum ub. Cov neeg siv cua ua ntej muaj keeb kwm kev yos rov qab mus rau 1580 thiab tam sim no yog kev sib tw ntawm livrustkammaren Tsev khaws puav pheej hauv Stockholm, Sweden. 17 th tiam. 30 ~ .51 Phom Hluav Taws Kub Cua tau siv hauv kev yos hav zoov.
Cov phom no siv cov twj cua kom tau cov huab cua, ntawm thawj zaug tshaj tawm txog li 200-300m / s, thiab tseem siv hauv kev ua tub rog. Cov phom huab cua dav dav muaj phom tswj kev cai, feem ntau nrog lub zog ua kom muaj zog qis, tab sis kuj muaj qee qhov kev sib tua ntawm lub zog ntawm 330m / s, siv 4.5mm txhuas los yog cov hlau muag hlau.
Cov phom huab cua muaj tseeb thiab tau siv dav hauv kev sib tw sib tw xws li Olympic Games, thiab 10m yog ib qho kev sib tw sib tw.
Lub sijhawm muaj hwj chim rau muaj peb hom phom phom muaj zog: caij nplooj ntoos hlav - piston, pneumatic thiab roj carbon phom, ob qho tib si pa roj thiab cua tshuab.
