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Two figures, one fitting draft strip to a door-frame, the other unrolling loft insulation. with a wind turbine in the background. Originally drawn to depict taking action to reduce wasteful CO2 production 渦輪 風力發電機組 絕緣 減少 CO2
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Side view of a REPower 5M wind turbine (original image source: Wikimedia.org). The basic wind turbine components are overlayed as system blocks. 風力發電機組 攜帶嬰兒床 橫軸 風渦輪發動機短艙切視圖
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