“Sagittarius arm”的概念、定义、翻译、参考文献-科学参考

单词	Sagittarius arm
释义	Sagittarius arm [´saj·ǝ`ter·ē·ǝs `ärm] ^ASTRONOMY A spiral arm of the Milky Way Galaxy that lies between the sun and the galactic center in the direction of the constellation Sagittarius.
随便看	variable diode function generator variable element variable field variable flow variable-focal-length lens variable-focus condenser variable force variable geometry aircraft variable inductance variable-inductance accelerometer variable inductor variable-length field variable-length operation variable-length record variable-length word variable-mu tube variable nebula variable parameter variable-pitch propeller variable point variable radio-frequency radiosonde variable recoil variable reduction variable-reluctance microphone variable-reluctance pickup

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