免费在线屋顶坡度计算器，快速计算屋顶坡度和椽子长度，支持角度与百分比转换。集成屋顶成本估算和屋架费用计算功能，为建筑工程提供精确的屋顶设计计算服务。
{
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"pv": 11,
"globalHotValue": 1,
"updateDt": 1767808611322,
"hotValue": 0.4,
"todayChainPv": 0,
"todayGlobalPv": 1,
"americaHotValueDouble": 1,
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"todayAmericaPv": 1,
"americaHotValue": 1,
"selectedValueDouble": 692,
"chinaHotValueDouble": 0,
"selectedValue": 692,
"chinaHotValue": 0,
"hotValueDouble": 0.4
}
