“trigonal system”的概念、定义、翻译、参考文献-科学参考

单词	trigonal system
释义	trigonal system [trī`gōn·ǝl `sis·tǝm] ^{CRYSTALLOGRAPHY} A crystal system which is characterized by threefold symmetry, and which is usually considered as part of the hexagonal system since the lattice may be either hexagonal or rhombohedral.
随便看	radio direction-finder station radio direction finding radio Doppler radio duct radio echo radio echo observation radioecology radioelectric meteorology radio element radio emission radio energy radio engineering radio facility chart radio facsimile system radio fadeout radio fan-marker beacon radio field intensity radio field-to-noise ratio radio fix radio fixing aid radio frequency radio-frequency alternator radio-frequency amplifier radio-frequency bandwidth radio-frequency cable

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