单词:impulse section blade
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Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t
Bird-friendly Bladeless Wind Turbine Mimics Nature Energy created by conventional three-blade wind turbines is cheap, sustainable and pollution-free. But according to current estimates, the devices' fast-moving blades kill up to 300,000 birds annuall
ROBERT SIEGEL, HOST: Ridley Scott's science fiction film Blade Runner was a modest hit in theaters in 1982 and a massive one later on video. Scott's punk noir dystopia initially got mixed reviews, but the director kept re-cutting his film. And by 200