noun🔗Share德尔塔 (Dé'ěrtǎ), Δ, δ. The fourth letter of the modern Greek alphabet Δ, δ."In math class today, we learned that the Greek letter delta is represented by the symbol Δ. "今天数学课上，我们学到希腊字母德尔塔(Dé'ěrtǎ) 用符号 Δ 表示。languagewordChat with AIVocabulary GamePractice Reading
noun🔗Share三角洲，冲积扇。 A landform at the mouth of a river where it empties into a body of water."Nile Delta"尼罗河三角洲geographygeologyenvironmentnatureChat with AIVocabulary GamePractice Reading
noun🔗Share代号D，三角。 The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet."When introducing himself, the new student used the delta in the ICAO spelling alphabet to spell his last name. "新同学在自我介绍的时候，用国际民航组织拼读字母表里的“三角”来拼写他的姓，也就是字母D的代号。phoneticswordlanguagecommunicationChat with AIVocabulary GamePractice Reading
noun🔗Share三角符號，Δ 符號 The symbol Δ."The delta symbol, Δ, represents the change in temperature. "三角符號 Δ 用來表示溫度的變化。markmathChat with AIVocabulary GamePractice Reading
noun🔗Share细微差别，小差异 A small but noticeable effect. Compare epsilon."This will slow the main code path down, but only by delta."这会降低主代码的运行速度，但只是稍微慢了一点儿。(Zhè huì jiàngdī zhǔ dàimǎ de yùnxíng sùdù, dàn zhǐshì shāowēi màn le yīdiǎnr.)outcomeamountdegreeChat with AIVocabulary GamePractice Reading
noun🔗Share差异，差量。 The set of differences between two versions of a file."When you update the file, the system will only save the deltas."当你更新文件时，系统只会保存文件差异部分。computingtechnologytechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share变化量，差量. A change in a quantity, likely from "d" for "difference"."ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)"ΔV - “delta vee”（速度变化量，常用于火箭学和轨道力学中）mathsciencestatisticsamountnumberChat with AIVocabulary GamePractice Reading
noun🔗Share圆心角 The angle subtended at the center of a circular arc."The delta of the clock's hands was 90 degrees as the minute hand pointed to twelve. "当分针指向十二时，时钟指针的圆心角是 90 度。mathChat with AIVocabulary GamePractice Reading
noun🔗Share倒三轮货运自行车, 前单轮货运自行车 A type of cargo bike that has one wheel in front and two in back."My brother bought a new delta cargo bike to carry all the groceries home from the market. "我哥哥买了一辆新的前单轮货运自行车，用来把所有从市场买的食物杂货运回家。vehiclemachineChat with AIVocabulary GamePractice Reading
noun🔗Share三角接线，三角形连接. The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system."delta winding; delta connection; delta current"三角接线绕组；三角形连接；三角接线电流systemelectronicselectricenergytechnologyChat with AIVocabulary GamePractice Reading
noun🔗Share对冲值，德尔塔。 The rate of change in an option value with respect to the underlying asset's price."The delta of the stock option is 0.75, meaning that for every dollar the stock price increases, the option value is expected to increase by 75 cents. "这个股票期权的对冲值（德尔塔）是0.75，这意味着股票价格每上涨一美元，期权价值预计会上涨75美分。businessfinancevalueassetChat with AIVocabulary GamePractice Reading
noun🔗Shareδ值，同位素偏差 A value in delta notation indicating the relative abundances of isotopes."The delta values for carbon isotopes in the soil samples show a significant difference between the two locations. "土壤样本中碳同位素的δ值显示，两个地点之间存在显著差异。chemistryphysicselementChat with AIVocabulary GamePractice Reading
noun🔗Share三角洲部队，特遣队 (U.S. Space Force) A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment."The delta squadron of the Space Force is responsible for monitoring satellite communications. "太空军的三角洲部队负责监控卫星通讯。militarygovernmentorganizationunitspaceChat with AIVocabulary GamePractice Reading
