del·ta /ˈdɛltə/
三角州,希臘字母的第四個字
delta
增量 差量
Del·ta n.; pl. Deltas
1. The fourth letter of the Greek alphabet (Δ δ), corresponding to D. Hence, an object having the shape of the capital Δ.
2. A tract of land shaped like the letter delta (Δ), especially when the land is alluvial and inclosed between two or more mouths of a river; as, the delta of the Ganges, of the Nile, or of the Mississippi.
3. Elec. The closed figure produced by connecting three coils or circuits successively, end for end, esp. in a three-phase system; -- often used attributively, as delta winding, delta connection (which see), etc.
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delta
n 1: a low triangular area where a river divides before entering
a larger body of water
2: the 4th letter of the Greek alphabet