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發布時間: 2022-9-28 13:36
正文摘要:「果殼扣」和「果實扣」,來看看這倆生活中常見的小物品是如何制造出來的~ 6 C' T0 ]! r9 M: I' x6 V 0 t9 W; ^& Y3 k" y9 J1 Y9 H1,椰殼紐扣是先用落料機在椰殼上挖出毛坯,再修剪掉毛刺; $ s: i ~* ... |
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