岩钉钢环制造商对重力作用点一直未作研究，重力作用点取决于未知的公差范围。
The point of actuation by gravity has not been investigated by the karabiner manufacturers and is subject to an unknown tolerance range.
岩钉钢环制造商对重力作用点一直未作研究，重力作用点取决于未知的公差范围。
The point of actuation by gravity has not been investigated by the karabiner manufacturers and is subject to an unknown tolerance range.
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