The at least one notch includes a greater dimension oriented in a direction of one of the grooves and is tapered along that dimension between a base and a vertex opposite the base.
至少在一档包括在更大的层面对沟槽面向一个方向是沿之间的基地和基地对面的圆锥顶点层面。
The at least one notch includes a greater dimension oriented in a direction of one of the grooves and is tapered along that dimension between a base and a vertex opposite the base.
至少在一档包括在更大的层面对沟槽面向一个方向是沿之间的基地和基地对面的圆锥顶点层面。
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