记忆方法
为了记忆“delta”，可以将其与“D”形状的河流三角洲联系起来，因为“delta”在地理学中指的是河流入海的三角洲形态。将“delta”想象成河流（“d”）冲积形成的三角洲形状，可以帮助记住这个词的含义。
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词族 · delta
词形变化
中文词源
delta 希腊字母表的第四个字母，三角洲
希腊字母表的第四个字母，三角洲因形如三角形而得名。
英语词源
- delta
-
delta: [16] Delta was the fourth letter of the Greek alphabet, corresponding to English d. Its capital form was written in the shape of a tall triangle, and already in the ancient world the word was being applied metaphorically to the triangular deposit of sand, mud, etc which forms at the mouth of rivers (the Greek historian Herodotus, for instance, used it with reference to the mouth of the Nile). Greek acquired the word itself from some Semitic language; it is related to dāleth, the name of the fourth letter of the Hebrew alphabet.
- delta (n.)
- c. 1200, Greek letter shaped like a triangle, equivalent to our "D," the name from Phoenician daleth "tent door." Herodotus used it of the mouth of the Nile, and it was so used in English from 1550s; applied to other river mouths from 1790.
权威例句
- 1. The less stable compounds were converted into a compound called Delta-A THC.
- 不太稳定的化合物被转换成了一种叫做Delta-ATHC的化合物。
- 2. A Delta II rocket was launched from Cape Canaveral early this morning.
- 今天一早，一枚“德尔塔”Ⅱ型火箭在卡纳维拉尔角发射升空。
- 3. Delta is the fourth letter of the Greek alphabet.
- δ是希腊字母中的第四个字母.
- 4. The Nile divides at its mouth and forms a delta.
- 尼罗河在河口分岔,形成了一个三角洲.
- 5. The singularities and inverse kinematic solution of the DELTA robot are discussed.
- 讨论了DELTA机构的奇异形位和运动学逆解等.