铁路固定装置。电气牵引电缆用嵌入钢筋混凝内的密排导管。直管构件。
Fixed railway installations. compact ducting in reinforced concrete for electric traction cables. straight units.
受热面采用密排圆盘管，受热面布置充足，降低管子表面热负荷，是导热油使用更安全。
Heating area is the closely-aligned round coils. Heating area is arranged sufficiently to reduce the surface heat load of pipe and handle the heat transfer oil safely.
受热面采用密排圆盘管，受热面布置充足，降低管子表面热负荷，是导热油使用更安全。
Heating area is the closely-aligned round coils. Heating area is arranged sufficiently to reduce the surface heat load of pipe and handle the heat transfer oil safely.
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