The contractile interior core pulling mould structure was designed for the molding of the concave part of inner side of outer casing of flow meter.
为成型流量计外壳内侧凹进部分，设计了收缩内抽芯模具结构。
The contractile interior core pulling mould structure was designed for the molding of the concave part of inner side of outer casing of flow meter.
为成型流量计外壳内侧凹进部分，设计了收缩内抽芯模具结构。
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