半圆: semicircle头: 5点就得动身 have to start before ...销: melt cancel; annul圆头销: cup head pin半圆头: button head; cup head; round head; semi-circle end半圆头, 半沉头: oval head半圆头锤: half-roundhammer半圆头带榫: cuhead nib bolts半圆头的: button-head半圆头钉: halfround head nail半圆头方: cuhead square neck bolts半圆头螺钉: button headed screw; button-headed screw; cup head screw; half-round head screw; half-round screw; round head screw半圆头螺栓: ahead bolt; ball headed bolt; ball stud; button headed bolt; button-headed bolt; cup head bolt; cup-headed bolt; half-round screw; snap head bolt; snap-head bolt半圆头螺丝: half-round head screw半圆头铆钉: brazier-head rivet; button head rivet; cup head rivet; half-round head rivet; snarivet半圆头方螺栓: cuhead square neck bolts半圆头木工锉: half round head file for carpentry半圆头木螺钉: cup head wood screw半圆头木螺丝: half-round wood screw大半圆头方颈: cuhead square neck bolts with large head product grade小半圆头铆钉: round head rivets with small head-black半圆头带槽螺钉: snap head grooved bolt半圆头带榫螺栓: cuhead nib bolts半圆头方颈螺栓: cuhead square neck bolt; half-round head square neck bolt; stebolt半圆头机器螺丝: ahead machine screw; snap head machine screw