底座人字架的英文

• a-frame of substructure

• 底座:    lampstand; foundation; pedes ...
• 人字架:    a bracket; double-armed strut; gin pole; propeller strut; shaft bracket; shaft strut; shear legs; shears; sheerleg
• 艉轴架，人字架:    shaft bracket
• 车座人字起重机:    derrick wagon crane; derrick wagon rane
• 车座人字形起重机:    derrick wagon crane