圆头压板
Generally, the box cover lower surface is equipped with a round clamp slot corresponding with the box body opening, the box body opening end is clamped in the clamp slot;
通常所述盒盖的下表面设置与盒体的开口对应的环绕卡槽,所述盒体的开口端卡装在所述卡槽中;
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