tractrix
GRE n.n. 名词 等切面曲线, 曳物线
A curve such that the part of the tangent between the
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point of tangency and a given straight line is constant; -- so called
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because it was conceived as described by the motion of one end of a
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tangent line as the other end was drawn along the given line.
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词性说明:n.=名词,v.=动词,vt.=及物动词,vi.=不及物动词,adj.=形容词,adv.=副词,prep.=介词,conj.=连词,pron.=代词,num.=数词,art.=冠词,int.=感叹词
🧩 单词拆解
- 词根
- tract — tract 拉
由 tract(拉) 构成,词根 tract 意为“拉”,整体引申为“等切面曲线, 曳物线”。
📜 词源解释
tractrix 与词根 tract 相关。词根 tract 源自 Latin trahere / tractus(拉),意为“pull(拉)”。 该词由词根 tract 直接派生。
🧠 记忆方法
记住词根 tract = 拉。tractrix 可拆解为 tract(拉),把各部件含义串联起来,就能牢牢记住 tractrix(等切面曲线, 曳物线)。
💬 常用例句
You can look up the word "tractrix" in a dictionary.
你可以在词典中查阅“tractrix”这个词。
The word "tractrix" appears in today's reading passage.
“tractrix”这个词出现在今天的阅读文章里。
Try to use "tractrix" in your own sentence.
试着用“tractrix”造一个句子。