方形钢管支柱
square section steel tube pole
添加型内部抗静电剂
additive inner antistatic agent
套管加强型节点
joint reinforced with sleeve
冷弯厚壁矩形型钢管
thick-walled cold formed steel with rectangular hollow section
楔形H型钢柱
tapered H-section steel column
型钢-钢管混凝土
hollow steel tube filled with steel-reinforced concrete
梭形钢管柱
shuttle tube steel column
cerura lanigera butler
插件和内部部件
Port plugs and vacuum vessel components
地下内部环境
the underground interior environment