Torx, 1967: the screw head that stopped cam-out once drivers could limit torque
Camcar Textron's six-lobed drive removed the Phillips screw's built-in slip — vertical sidewalls killed cam-out, and assembly lines followed.
閱讀案例探索打破常規的解法,理解它們為什麼有效。
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Camcar Textron's six-lobed drive removed the Phillips screw's built-in slip — vertical sidewalls killed cam-out, and assembly lines followed.
閱讀案例Five years after the 2017 unveil, Tesla's 500-mile semi went to work hauling Frito-Lay 425 miles, backed by four 750 kW chargers per depot.
閱讀案例John Adams saw free bandwidth hiding in every TV signal's blanking interval; Ceefax and Oracle rode it, then merged formats into the world teletext standard.
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閱讀案例SEBI converted the world's fifth-largest equity market to next-day settlement cohort by cohort — then to same-day — without waiting for anyone else.
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閱讀案例Rwanda paid hillside farmers to terrace, then consolidated plots around one crop per site — yields rose up to 8-fold and commercialization hit 80%.
閱讀案例Japan's 1979 contest chose Yukio Ota's green running man; the most thoroughly tested sign beat a Soviet rival to become the world's exit symbol.
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閱讀案例The virus hid in coverage gaps. India vaccinated every under-five on the same days, caught movers at transit hubs, and let mosques do the persuading.
閱讀案例While India's power reform fought over generation and distribution, transmission got its own company — and grew to carry a third of national power capacity.
閱讀案例Free farm power drained aquifers and discoms alike. KUSUM let farmers sell surplus solar back to the grid, so saving power became income.
閱讀案例Produce PLU codes: four random digits plus an attribute prefix, so any register worldwide rings any banana — the code that made self-checkout work.
閱讀案例The PBOC cannot buy equities, so it lent its own balance-sheet quality: brokers and funds pledged shares and ETFs for treasuries they could fund against.
閱讀案例Malaysia's organ donation rate is among the world's lowest, so NTRC asked for pledges where Muslims already give: Ramadan's zakat counters, endorsed by muftis.
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