Founding. A narrow vertical passage in a mould into which molten metal can rise as the mould is filled, forming a supply which flows back into it…
| 单词 | θ212973 |
| 释义 | society > occupation and work > equipment > metalworking equipment > [noun] > casting equipment > mould > hole for pouring in metal > part in which metal rises (1) riser1873 Founding. A narrow vertical passage in a mould into which molten metal can rise as the mould is filled, forming a supply which flows back into it… |
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