button head

基本解釋

Includes Low Head, Button Head, and Flat Head Screws, as well as special Socket Cap Screws such as Vented, Drilled Head, Self-Locking, and more.
包括低壓頭，半圓頭及平頭螺絲以及特殊內六角圓柱頭螺釘如排空，鉆孔頭，自鎖，等等。
The joint of external thread shall be weld the container or pipes, cover the nut with spherical joints, and the button head shall be weld on relevant pipes;
外螺紋的接頭焊在容器或管路上，將螺母套入球面接頭后，球頭接頭與相應的管路焊接；
Make the pipes with button head align with the joints of external thread, rotate the nut and make it align to the center, knock the nut and screw up the nut.
將焊有球頭的管子與外螺紋接頭中心相對，旋轉螺母使其自動對中心后，敲擊螺母使螺母旋緊。

If apes see a man pressing a button with his head because his hands are occupied holding a blanket, they will press the button with their hands.
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