HANDEDICT汉德词典
HanDeDict 汉德词典
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三角恒等•三角恆等sān jiǎo héng děng
1 trigonometrische Beziehung(en) (S, Math)
三角恒等式•三角恆等式sān jiǎo héng děng shì
1 Formelsammlung Trigonometrie (S, Math)
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