diameter
英 [daɪˈæm.ɪ.tər]
美 [daɪˈæm.ə.t̬ɚ]
将“diameter”分解为“diam-”(联想到“diamonde”钻石,表示圆的切割面)和“-eter”(来自“meter”,表示测量)。想象你用一个圆的切割面(钻石)来量度它的直径,即通过圆心连接两边最远点的距离。这样的形象联想有助于记忆这个单词的含义。
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diameter 直径dia-, 穿过。-meter, 测量。用于数学名词直径。
- 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)).
- 1. This hole was a scant .23 inches in diameter.
- 这个洞眼的直径只有0.23英寸。
- 2. the diameter of a tree trunk
- 树干的直径
- 3. A diameter passes through the center of a circle.
- 直径从圆心穿过.
- 4. The diameter and the circumference of a circle correlate.
- 圆的直径与圆周有相互关系.
- 5. The axis of a circle is its diameter.
- 圆的轴线是其直径.