... boxless mold脱箱砂模 break-off core缩颈砂心 brick molding砌箱造模法 ...
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... boxless mold 脱箱砂模 break-off core 缩颈砂心 brick molding 砌箱造模法 ...
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... 缩颈砂心break-off core 缩颈砂心wafer core 缩颈砂心Washburn core ...
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... neck down bolt 缩颈螺栓 neck down core 缩颈砂心 ; 敲落 paralysed from the neck down 颈部以下全身瘫痪 ...
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