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19了7年1~4期第1期(总第3了期)2甚米整孔单室箱形无碴无枕预应力钢筋i昆凝土梁铁路预应力混凝土单室箱梁的约束扭转计算 第二工程局桥梁工厂(本期两招均由认道部第二设计院无碴无枕一趁小组供稿) 西南交一卫大学副刊:国外桥梁第10辑(单册) 国外预应力混凝土铁路桥概况第2期(总?
19 7 years 1 ~ 4 period 1 (total third period) 2 Imoles full hole single-chamber box ballastless without pillow prestressed steel i Kunjiangtudang railway prestressed concrete single-box box girder restrained torsion Calculation of the Second Engineering Bureau bridge factory (this period, two strokes by the Ministry of Construction Road No.2 Design Institute ballastless pillow a while the group feed) Southwest Jiaotong University Supplement: Foreign Bridge Series 10 (single) Foreign prestressed concrete Railway Bridge Overview No. 2 (total?