| 单词 | rotation axis |
| 释义 | rotation axisnoun Crystallography.an imaginary line through a crystal about which the crystal may be rotated a specified number of degrees and be brought back to its original position. Also called axis of symmetry, symmetry axis of rotation. Compare symmetry element. Origin of rotation axisFirst recorded in 1900–05 Words nearby rotation axisrotating, rotation, rotational molding, rotational nystagmus, rotational quantum number, rotation axis, rotation flap, rotation-inversion axis, rotation of axes, rotation vector, rotative Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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