cutting tool造句怎麼寫
- 造句
- 關注:2.56W次
These Paleo-Indians, of the Clovis culture, used the significant amounts of obsidian found in the park to make such cutting tools and weapons.
an alloy steel that remains hard at a red heat; used to make metal-cutting tools.
The cutting tool was characterized by intercrystalline fracture attributed to fatigue and partial cleavage fracture in the machining process.
It thus has a wide range of USES, from abrasives and cutting tools to bullet-proof vests and ceramic brakes in sports cars.
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