... closed force polygon 合力多边形 closed heat supply system 封闭式供热系统 closed position 闭合的位置 ...
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closed-type hot-water heat-supply system 闭式热水供热系统
closed heat just supply system 关闭式供热编制
closed d heat supply system 封闭式供热系统
twopipe closed loop heat-supply system 双管闭环供暖系统
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