aluminum bearing structure
... 钢支承结构施工 Execution of steel structures 堆芯支承结构 core support structure 铝支承结构 aluminum bearing structure ...
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支承结构包括铜和锌以及小于1％（重量）的铝、锡或铝与锡。
The support structure includes copper and zinc, and has less than 1 weight percent of aluminum, tin or aluminum and tin.
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