etching needle
... etching machine 腐蚀制版机 etching needle 蚀刻针 etching paper 腐蚀版印刷用纸 ...
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蚀刻指针 Etching Indicator
蚀刻指针. Etching Indicator
扫描探针刻蚀加工技术 scanning probe lithography
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早期爱斯基摩人将海象牙制作不同的实用物品，如桶柄、鱼叉柄和针盒等。他们在这些物品上蚀刻由细线条组成几何或弯曲优美的图形。
The early Inuit (Eskimos) produced such utilitarian objects as harpoon shafts and bucket handles out of ivory and often etched them with geometric or curving patterns. See also scrimshaw.
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