trussv.束紧；用桁架支撑n.(干草的)一捆；一束；构架truss-head rivet大圆头铆钉truss type chassis桁架式底座truss-core panel类桁架夹层板truss-frame plow架式犁truss-head screw大圆头螺钉truss steel bridge钢桁桥truss gantry crane桁架门式起重机truss-bolt system锚拉支架系统trussed beam plough吊挂式犁truss core sandwich构架夹芯结构