该前垫片与鞋垫体相接处设一沟槽，便于穿着鞋子时虎指的灵活动作。
A groove is arranged at the joint of the front pad and the shoe-pad body to facilitate the tiger finger to move freely when people wear shoes.
这种阀门是为安装于尾端为沟槽的装置而设计的，取代了这种情况下通常的通过垫片安装。
The valve is designed to fit into grooved end clamp type fittings and replaces the gasket normally used with these fittings.
这种阀门是为安装于尾端为沟槽的装置而设计的，取代了这种情况下通常的通过垫片安装。
The valve is designed to fit into grooved end clamp type fittings and replaces the gasket normally used with these fittings.
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