round head square-neck bolt是什么意思
中文翻译圆头方颈螺栓
网络释义
1)round head square-neck bolt,圆头方颈螺栓2)cup head square neck bolt,半圆头方颈螺栓3)half round head square neck bolt,半圆头方颈螺栓4)oval head square neck bolt,椭圆头方颈螺栓5)step bolt,半圆头方颈螺栓6)cup head square neck bolt with large head,大半圆头方颈螺栓7)strengthened cup head square neck bolt,加强半圆头方颈螺栓8)large oval head square neck bolt,大扁圆头方颈螺栓9)strong oval head square neck bolt,加强半圆头方颈螺栓10)Round head,圆头