up-and-down rod
... 直立排列汽缸发动机：vertical tandem engine 直立杆：upright rod 直立辅助锅炉：vertical donkey boiler ...
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直立杆套装 upright rod set
直立式挥杆 Upright swing
直立式杆 upright lever
笔直的挺立腰杆 Standin' arrow straight
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本文研究了直立管式结构如烟囱、电线杆等的抗风防灾分析和经济损失估算。
For vertical pipe structure such as chimney and wire pole, the wind-induced disaster and economic loss were studied.
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