fuselage longeron机身纵梁
frame longeron车架大梁
body longeron机身纵梁
longeron structure桁梁式结构
longeron creux开口箱形纵梁
false longeron假梁
auto longeron汽车纵梁
rear longeron后部大梁
main longeron主梁
N（名词） a main longitudinal structural member of an aircraft (飞机机身的)纵梁