Considered obsolete today although it is still found in non-intensive applications such as hand operated tools (eg reamers and taps).
认为是过时的今天，尽管它仍然是在非密集的应用中，如手(如绞刀，丝锥)经营的工具。
Considered obsolete today although it is still found in non-intensive applications such as hand operated tools (eg reamers and taps).
认为是过时的今天，尽管它仍然是在非密集的应用中，如手(如绞刀，丝锥)经营的工具。
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