| 单词 | curl |
| 释义 | Word Frequency curl(kɜːl) verb 1. (intransitive) (esp of hair) to grow into curves or ringlets 2. (transitive; sometimes foll by up) to twist or roll (something, esp hair) into coils or ringlets 3. (often foll by up) to become or cause to become spiral-shaped or curved; coil the heat made the leaves curl up 4. (intransitive) to move in a curving or twisting manner 5. (intransitive) to play the game of curling 6. curl one's lip noun 7. a curve or coil of hair 8. a curved or spiral shape or mark, as in wood 9. the act of curling or state of being curled 10. any of various plant diseases characterized by curling of the leaves 11. Also called: rot, rotation mathematics a vector quantity associated with a vector field that is the vector product of the operator ∇ and a vector function A, where ∇ = i∂/∂ x + j ∂/∂by + k ∂/∂z,i, j, and k being unit vectors. Usually written curl A, rot A Compare divergence (sense 4), gradient (sense 4) Word origin C14: probably from Middle Dutch crullen to curl; related to Middle High German krol curly, Middle Low German krūs curly |
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