| 单词 | sand plug |
| 释义 | > as lemmassand plug sand plug n. (see quot. 1888). ΚΠ 1888 Lockwood's Dict. Mech. Engin. at Plug A sand plug..is..the ball of sand..with which the riser of a mould is covered while the metal is being poured at the ingate. < as lemmas |
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