吕氏英汉字典[简体]:
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sigma angle
"sigma angle" Chinese translation ("sigma angle" in Chinese, "sigma angle" 中文翻译, "sigma angle"发音):
sigma angle
n. sigma形角(固定半径与后鼻棘点至蝶枕点线之间的角) [n. sigma形角(固定半径与后鼻棘点至蝶枕点线之间的角)]
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