digital masheenein, pehli baar upayogi tab bani jab ek svich ke liye MTBF kuchh sau ghante se oopar ho gaya. fir bhi, inmein se kai masheenon mein jatiltaaen theen, achhi tarah se abhyaas ki jaane waali marammat prakriyaaen aur ek tube ke jal jaane ya ek keet ke ek rile mein fans jaane ke kaaran kai ghanton tak kaam naheen karateen thi. aadhunik traanjistar krut ekeekrut paripth laujik gate mein lagbhag ek treeliyn ghante ka MTBFs hai (1 × 1012)),[krupaya uddharan jodein] aur unki jaroorat hai kyonki unke paas bahut saare laujik gate hai.
1980 ke dashak mein mile vaigyaanik pramaan ke anusaar tambaakoo companiyaan ne daava kiya hai ki laaparavaahi baratne ka kaaran svaasthya par padne vaale pratikool prabhaav se pehle unka anajaan hona tha ya paryaapt vishvasaneeyata ka abhaav tha. svaasthya adhikaariyon ne 1998 tak in daavon ka saath diya jiske baad unhonne apni sthiti ulat di. tambaakoo pradhaan niptaan samjhauta (the tobaiko master saitalameint egreemeint) mool roop se chaar sabse badi tambaakoo companiyon aur 46 raajyon ke ameriki etorni general ke beech hua. tambaakoo ke kuchh khaas prakaar ke vijnyaaapanon par pratibandh laga diya gaya aur svaasthya muaavaje ke taur par bhugataan ko aavashyak kar diya gaya, jo baad mein sanyukt raajya America ke itihaas mein sabse bade naagrik niptaan ke roop saamane aaya.[36]

ubot

×