“Graptolithina”的概念、定义、翻译、参考文献-科学参考

单词	Graptolithina
释义	Graptolithina [´grap·tǝ·lǝ`thīn·ǝ] ^PALEONTOLOGY A class of extinct colonial animals believed to be related to the class Pterobranchia of the Hemichordata.
随便看	up-and-down method upcast up-converter update update service up-Doppler updraft carburetor updraft furnace updrift upflow upgrade uphole uphole time upland uplift pressure uplink upload upmilling upper upper air upper-air chart upper-air disturbance rod bit rod coupling rodding

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