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张益瑞
1
, 苏建
1
, 张兰
1
, 谭富星
2
, 徐观
1
Primary suspension stiffness testing of railway vehicle bogie
ZHANG Yi-rui
1
, SU Jian
1
, ZHANG Lan
1
, TAN Fu-xing
2
, XU Guan
1
垂向动态刚度测定试验中力与位移的时域曲线