“harmonic pencil”的概念、定义、翻译、参考文献-科学参考

单词	harmonic pencil
释义	harmonic pencil [här¦män·ik `pen·sǝl] ^MATHEMATICS The configuration of four lines, passing through a single point, such that any line that is not parallel to one of the four cuts the four lines at points which are harmonic conjugates.
随便看	heavy-ion linear accelerator heavy-ion source heavy-lift ship heavy liquid heavy-liquid bubble chamber heavy-liquid separation heavy machine gun heavy-media separation heavy meromyosin heavy metal heavy-metal star heavy mineral heavy-mineral prospecting heavy naphtha heavy oil heavy oxygen heavy particle heavy resin oil heavy section car heavy tank heavy water heavy-water reactor heavy weapon heazelwoodite Hebe

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