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 main machine comprises a machine casing, a high voltage transformer, a water pump and a flow meter etc.
主机包括机壳、高压变压器、水泵、流量计等；
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