Double roller press system, pneumatic pressure.
双辊双压，气动加压。
Double roller unit available for long pin or punch grinding.
双滚轮装置可研磨长形射削或冲子。
Double row cylindrical roller bearing is applied on machine tool principal axis.
双列圆柱滚子轴承适用于机床主轴。
In international pattern match, double row wheel roller skates are specified with his shoe.
在国际花样比赛上，双排轮旱冰鞋是指定用鞋。
In international pattern match, double row wheel roller skates are specified with his shoe.
在国际花样比赛上，双排轮旱冰鞋是指定用鞋。
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