| 单词 | diameter |
|---|---|
| 音标 | [dai'æmitə] |
| 解释 | n.直径 |
| 红宝书 | 【英】 直径(length of a straight line connecting the center of a circle or sphere to two points on its side) 【考】 diameter : circle / diagonal : rectangle(直径是圆形内最长直 线/对角线是矩形内最 长直线) 【记】 dia(对面)+meter(计 量,测量) →量到对面的线→直径 |
| 字源 | diameter (n.) late 14c., from Old French diametre, from Latin diametrus, from Greek diametros (gramme) "diagonal of a circle," from dia- "across, through" (see dia-) + metron "a measure" (see meter (n.2)). |
| 不择手段背单词 | n. 直径(长) 【记】dia穿过, meter测量－穿过圆心可测量圆的面积的线－直径 【类】diameter: circle = diagonal: rectangle直径是圆形内最长直线 = 对角线是矩形内最长直线 |
| 趣味全助记 | 【记】dia 通过，横过 + meter 横过的米，尺度，测量；dial 拨 + meter 尺寸，拨盘的尺寸是直径 【相关】meter 测量仪表 |
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