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The contact rail system of Songjiazhuang park station is composed of steel-aluminum contact rail and GRP guard shield.
宋家庄停车场接触轨系统采用钢铝复合接触轨和玻璃钢护罩。
youdao
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The contact rail system of Songjiazhuang park station is composed of steel-aluminum contact rail and GRP guard shield.
宋家庄停车场接触轨系统采用钢铝复合接触轨和玻璃钢护罩。
youdao