... 人工时效处理 artificial ag(e)ing treatment 人工旋压法 manual spinning 韧脆转变温度 ductile-brittle transition temperature ...
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manual spinning machine 人工旋转成形机
manual free spinning operation 手工自由旋压操作
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My nephew says in another letter to me last year, "because of old age, grandma is no longer in good health, but she still does manual Labour, and is particularly fond of spinning cotton into yarn..."
去年另一封外甥的家信中说：“外祖母大人因年老关系，近年不比往年健康，但仍不缀劳作，尤喜纺棉。”
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