Thaum twg cov tub rog pib siv pob ntseg?

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Thaum twg cov tub rog pib siv pob ntseg?
Thaum twg cov tub rog pib siv pob ntseg?

Video: Thaum twg cov tub rog pib siv pob ntseg?

Video: Thaum twg cov tub rog pib siv pob ntseg?
Video: Tswv Yexus lub neej thaum pib txug thaum xaus 2024, Hlis ntuj nqeg
Anonim

Nrog rau cov chav 'lub zog poob qis vim tsis hnov lus, cov thawj coj tau pib paub tias kev npaj hnov lus yog ib qho tseem ceeb ntawm chav tsev ua haujlwm hauv kev sib ntaus sib tua. Tag nrho cov tub rog xa tawm yog li ntawd tau muab lub pob ntseg tso rau hauv 2004.

Thaum twg cov tub rog pib hnav pob ntseg?

Earplugs tau patented hauv xyoo 1864 thiab cov kaus mom kwj dej txuas nrog lub taub hau kho tau hauv 1884 ua kev tiv thaiv rau cov tub rog thiab cov neeg tsav nkoj. Kev sim txwv tsis pub muaj phom suab nrov los ntawm cov cuab yeej siv tshuab tau pib xyoo 1905, ua rau Mallock-Armstrong plugs siv rau hauv Thawj Tsov Rog Ntiaj Teb Zaum Ob. Cov pob ntseg pov tseg tau patented hauv xyoo 1914 thiab.

Cov tub rog hauv ww2 puas hnav pob ntseg?

Suab nrov tau nrog peb nyob ntev npaum li tib neeg muaj. Txawm li cas los xij, kev tiv thaiv kev hnov lus los ntawm lub suab nrov yog feem ntau ua tau. … Cov tub rog tau coj tus nqi tsim kho kev tiv thaiv kev hnov lus, tshwj xeeb nrog Mallock-Armstrong earplugs siv hauv WWI thiab V-51R pob ntseg siv hauv WWII

Cov tub rog puas hnav pob ntseg?

Cov tub rog feem ntau tau muab lub pob ntseg ua npuas ncauj los tiv thaiv kev hnov lus, tab sis ob peb lub pob ntseg tiv thaiv vim nws thaiv txhua lub suab nrov, ua rau nyuaj rau hnov cov lus txib thiab mloog ob tus phooj ywg thiab yeeb ncuab troop zog.

Cov tub rog puas tau hnav pob ntseg?

Tub rog hnav pob ntseg thaum nyob tom teb. Cov tub rog tuaj yeem xaiv hnav cov pob ntseg ua npuas ncauj, Triple-thiab quad-flange earplugs, tactical earplugs, suab nrov muffs, thiab TCAPS. TCAPS yog cov cuab yeej tiv thaiv pob ntseg zoo tshaj plaws rau cov tub rog thiab US Army siv lawv ntau zaus.

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