tracing pen


  • 翻译:自记器描笔

同义词

1)tracing pen,自记器描笔2)pen arm,自记器笔尖3)inkless pen recorder,无墨描笔记录器4)pen recorder,dual,双描笔式记录器5)pen oscillograph,描笔式记录器6)pen automatic recorder,笔式自动记录器

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