事实上，即使在很小的区域内，辐射水平也会随着天气状况和建筑材料等因素千差万别。
In fact levels are known to vary widely within even small areas, depending on weather patterns and building materials.
购房者受阻于高额的利息和银行信贷不足；银行则对开发商实行信贷配额；同时水泥、钢铁等建筑材料的价格飞涨。
Homebuyers are put off by expensive or elusive credit; Banks are rationing credit to developers; prices of building materials like cement and steel have soared.
此状态取决于不同的参数，例如建筑材料和系统性能等。
Thisstate depends on different parameters such as building material and performance of the system etc.
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