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stiff-leg derrick
port.facil. 钢腿人字起重机; 固定肢起重杆
tech. 支柱式人字动臂起重机; 固定脚起重机
stiff leg derrick
archit. 刚性柱架; 斜拉杆式起重机
mech.eng. 斜柱杆式起重机
stiff-leg derrick
: 1 phrase in 1 subject
Technology1