- high temper steel
- high-temper steel
- high-tempersteel
- 高温: high temperature; elevated t ...
- 回火: tempering; draw the temper; ...
- 钢: sharpen; strop; whet
- 高温回火: high temperature tempering; high tempering
- 回火有低温回火及高温回火: low & high temperature tempering; low &am high temperature tempering
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