If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.
如果你想成为手艺
、
、造
或
,你需要代数和几何,甚至三角学。
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For example, when preparing a landmark 1931 scholarly article on economics, one later reprinted for decades thereafter, Professor Jacob Viner of the University of Chicago instructed a draftsman on how he wanted certain complex cost curves constructed.
例如,1931 年,芝加哥大学教授雅各布·维纳 (Jacob Viner) 准备一篇具有
程碑意义的经济学学术文章(该文章后来
几十年后重印)时,指导一名绘图员如何构建某些复杂的成本曲线。