The helically wound coil may be movable laterally in the groove between a melt channel open position and a melt channel closed position to open or seal the melt channel.
所述螺旋缠绕线圈可在所述槽内在一熔体通道打开位置与一熔体通道关闭位置之间横向移动，以打开或密封所述熔体通道。
The helically wound coil may be movable laterally in the groove between a melt channel open position and a melt channel closed position to open or seal the melt channel.
所述螺旋缠绕线圈可在所述槽内在一熔体通道打开位置与一熔体通道关闭位置之间横向移动，以打开或密封所述熔体通道。
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