noun🔗Share四元组, 四数组 A group or set of four people or things."The quaternions on the school board included the principal, the vice-principal, and two teachers. "学校董事会的那个四人组包括校长、副校长和两位老师。groupnumberChat with AIVocabulary GamePractice Reading
noun🔗Share四音节词，四音节词语 A word of four syllables."In our English class, we practiced identifying the number of syllables in words, and the teacher used "quaternions" as an example of a word with four syllables. "在我们的英语课上，我们练习辨认单词的音节数量，老师用“quaternions”这个词作为例子，说明它是一个四音节词。mathnumberwordlinguisticsChat with AIVocabulary GamePractice Reading
noun🔗Share四元数 A four-dimensional hypercomplex number that consists of a real dimension and 3 imaginary ones (i, j, k) that are each an independent square root of -1. They are commonly used in vector mathematics and in calculating the rotation of three-dimensional objects."The engineer used quaternions to calculate how the robot arm would rotate the parts in the factory. "工程师使用四元数来计算工厂里机器人手臂如何旋转零件。mathphysicstechnicalChat with AIVocabulary GamePractice Reading
