(1) Kev vibration thiab cuam tshuam ntawm cov khoom siv ntawm lub tshuab ziab khaub ncaws yog me ntsis, thiab cov khoom siv tsis yooj yim rau cov hmoov thiab tawg, yog li nws kuj tseem tsim nyog rau ziab qee cov ntaub ntawv uas tsis pub kom tawg.
(2) Lub tshuab ziab khaub ncaws tsis yog tsuas yog siv rau ziab cov ntaub ntawv, tab sis kuj rau ci, tua lossis kho cov ntaub ntawv.
(3) Cov qauv siv lub tshuab ziab khaub ncaws tsis nyuaj, kev teeb tsa yooj yim, thiab nws tuaj yeem khiav tau ntev. Nws tuaj yeem nkag mus rau hauv lub thawv rau kev saib xyuas thaum muaj qhov tsis ua haujlwm, thiab kev saib xyuas yooj yim.
(4) Cov huab cua ntim, cua sov kub, cov khoom siv nyob hauv lub sijhawm thiab kev pub noj ceev tuaj yeem hloov kho kom tau txais cov nyhuv ziab kom zoo tshaj plaws.
(5) Cov cuab yeej siv tau yooj yim, thiab siv lub tshuab siv mesh thiab cov khoom cua txias tuaj yeem siv tau.
(6) Cov huab cua feem ntau yog rov ua dua tshiab, uas txuag lub zog.
(7) Cov cuab yeej tshwj xeeb cua faib ua rau cov cua kub faib ntau dua thiab ua kom cov khoom zoo sib xws.
(8) Lub tshav kub tuaj yeem sib xyaw nrog cov nkev, cov roj hloov hluav taws xob, hluav taws xob lossis cov roj (roj) kub blast qhov cub