在这次去年12月在哥本哈根举行的国际气候峰会上，由工业化国家共同签署的非约束性条款中，涉及到了这个具有魔力的数字。
And it was the magic number cited in the nonbinding agreement to limit global temperature increases signed by industrialized countries at the international climate summit last December in Copenhagen.
13型外壳适用于工业室内使用，主要提供一定程度的防尘，防水，防油和非腐蚀性冷却液的防护。
Type 13 enclosures are intended for industrial indoor use primarily to provide a degree of protection against dust, spraying of water, oil, and noncorrosive coolant.
12型外壳适用于工业室内使用，主要提供一定程度的防尘，防灰尘和非腐蚀性液体的防护。
Type 12 enclosures are intended for industrial indoor use primarily to provide a degree of protection against dust, falling dirt, and dripping noncorrosive liquids.
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