得出的结轮是提高压头压下速度能提高砂型表面硬度。
Thus we got a conclusion that increasing the velocity of pressing can increasing the hardness of sand mould surface.
MPT系列,磁力驱动的回热式透平泵,专门用于小流量,高压头应用领域。
MPT Series magnetically driven, sealless regenerative turbine vane pumps are designed specifically for small flows at high heads.
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