... half-round head 半圆头 half-round head screw 半圆头螺丝 half-round head rivet 半圆头铆钉 ...
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半圆头铆钉 snap rivet ; round head rivet ; button head rivet ; cup head rivet
半圆头机器螺丝 snap head machine screw ; ahead machine screw
半圆头带榫螺栓 Cup head nib bolts
半圆头六角孔螺丝 BUTTON HEAD SOCKET CAP SCREWS
半圆头销 cup head pin
半圆头方螺栓 Cup head square neck bolts ; cuhead square neck bolts
金属半圆头螺钉 metal screw with half-round head
半圆头钉 half round head nail
半圆头柳钉 snap rivet
半圆头低方颈螺栓。
结果表明，主干较矮，树冠为自然半圆头形，冠幅略大于冠厚。
Result shows that the trunk was short and the canopy shaped as the natural semicircle.
网片与立柱的连接采用半圆头方颈螺栓，配以防盗垫圈，能防止隔离栅被人为地随意拆卸。
Mesh column connection with the use of semi-circular bolt head square neck, with anti-theft rings and washers, to prevent the separation can be artificially demolition.
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