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Flame retardant selection and inflaming retarding principle are researched on winding cementing system of compound oxygen cylinder used for coal mine safe.
研究了煤矿安全用复合式氧气瓶缠绕胶接体系中阻燃剂的筛选及阻燃机理。
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The secluded compound is tucked behind gates, situated at the end of a winding 1, 800-foot-long driveway.
FORBES: Listed For $190 Million, This Is America's New Most Expensive Home For Sale
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