发布时间:2025-01-29 14:58:37
板式一般是小高层,几面通风采光,但是建筑成本低,占地
蝶式也属于点式的一种,建筑形态有点象蝴蝶,顾名思义
1000kva的变压器额定电流最大承受电流i1000470692814434a 是否三相相加14434a还是每相14434
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