crystallographersˌkrɪstəˈlɒɡrəfizCOCA¹²²⁹²²BNC¹¹⁴⁰²⁴⁺⁵ 基本例句 检晶器原型crystallographer的复数 Crystallographers always believed that all crystals have rotational symmetry, so that when they are rotated, they look the same. 晶体学家们一直认为所以的晶体都具有旋转对称性，这样当它们转动起来时候，从各方面来看都是一样的。 yeeyan