Dab tsi yog cov khoom ntse

Cov ntaub ntawv ntse yog tiam thib plaub ntawm cov ntaub ntawv tom qab cov khoom siv ntuj, cov ntaub ntawv hluavtaws polymer, thiab cov khoom siv tsim artificially. Lawv yog ib qho ntawm cov lus qhia tseem ceeb rau kev tsim kho ntawm cov ntaub ntawv qib siab tshiab tshiab. Cov teb chaws txawv teb chaws tau ua ntau lub thev naus laus zis hauv kev tshawb fawb thiab kev loj hlob ntawm cov ntaub ntawv ntse, xws li lub xaim hluav taws xob ntawm British Aerospace Corporation, uas yog siv los kuaj hom kab mob thiab qhov kub thiab txias ntawm cov tawv nqaij dav hlau; lub tebchaws United Kingdom tau tsim cov lus teb nrawm nrawm nrog lub cim xeeb nrog lub neej ntev txog tsheej lab ntawm lub ntiaj teb thiab cov txiaj ntsig ntawm lub zog loj, thaum siv los ua tus nres, lub sijhawm tig cev tsuas yog 10 feeb xwb; cov duab cim cov hlau txhuas kuj tau siv ua tiav hauv cov kav hlau txais xov, tshuaj thiab lwm cov teb.