T梁桥和空心板梁桥
T-shaped beam bridge and hollow slab bridge
积木式空心螺杆
Building block hollow screw
加压空心螺钉
compressive cannulated screw
空心螺钉
Hollow screw
Hollow screws
Hollow compression screw
Cannulated screw
Cannulated screws
canulated screw
percutaneous cannulated screw
Cannulated screwlated screw