Thumb screw
01
拇指螺丝, 蝶形螺丝
a type of fastener designed with a large, knurled or textured head that can be easily tightened or loosened by hand without the need for additional tools
例子
The technician used a thumb screw to open the case of the computer without needing any tools.
技术人员使用了一个拇指螺丝来打开电脑的机箱，而不需要任何工具。
He tightened the thumb screw on the shelf to secure it in place.
他拧紧了架子上的拇指螺丝以将其固定到位。
