“principal line”的概念、定义、翻译、参考文献-科学参考

单词	principal line
释义	principal line [`prin·sǝ·pǝl `līn] ^{GRAPHIC ARTS} The trace of the principal plane upon a photograph. ^SPECTROSCOPY That spectral line which is most easily excited or observed.
随便看	dimethylbenzene dimethyl carbate dimethyl diaminophenazine chloride dimethyl ether dimethylethylene dimethylglyoxime dimethylisopropanolamine dimethylolurea dimethyl phthalate dimethyl sebacate dimethyl sulfate dimethyl sulfide dimethyl sulfoxide dimethyl terephthalate dimictic lake diminution dimity dimmer dimmerfoehn dimorphism dimorphite dimple crystal dimpling dimuon event Dimylidae

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