钢筋混凝土套拱
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钢筋混凝土套拱
reinforced concrete covered arch
套拱
Covered
Cover arch
cooperated arch
套拱法
overlap arch way
套拱技术
sleeve technique
套拱加固
reinforcement with arch surround
Reinforcemert with arch surround
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孕前照护Fresh and Live Goods电晕放电谐振荡长程temperature increasing behaviorfigurative designKarst mountainous basinthe free sound field deviation