noun🔗Share德尔塔，Δ，δ The fourth letter of the modern Greek alphabet Δ, δ."In his math notes, John wrote several deltas to represent change in values. "在他的数学笔记中，约翰写了好几个**德尔塔（Δ，δ）**来表示数值的变化。languagewritingChat 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geographyenvironmentChat with AIVocabulary GamePractice Reading
noun🔗Share德尔塔 The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet."To spell out his name correctly, the student used the deltas of the ICAO alphabet. "为了正确拼写出他的名字，这个学生使用了国际民航组织字母表中的“德尔塔”来代表字母D。languagephoneticswordcommunicationChat with AIVocabulary GamePractice Reading
noun🔗Share三角形符号，德尔塔符号 The symbol Δ."In math class, we learned that "deltas" are often used to represent changes in values. "在数学课上，我们学到“德尔塔符号”（Δ）通常用来表示数值的变化。mathsignChat with AIVocabulary GamePractice Reading
noun🔗Share细微差别，微小差异。 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点。outcomemathscienceChat with AIVocabulary GamePractice Reading
noun🔗Share差异，差量，增量 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，系统只会保存文件的差异部分 (chāyì bùfen)。technologycomputinginternettechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share变化量，差值 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，火箭学和轨道力学中使用的术语）mathscienceamountstatisticsChat with AIVocabulary GamePractice Reading
noun🔗Share圆心角 The angle subtended at the center of a circular arc."Example Sentence: "To accurately measure the pizza slices, the math student calculated the deltas formed by each arc of crust." "为了准确测量披萨饼的每一块，这位数学专业的学生计算了每段饼皮弧线所对应的圆心角。mathtechnicalsciencephysicsdegreeChat 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."The delivery company uses deltas to transport packages through the crowded city streets because they are stable and can carry heavy loads. "这家快递公司使用前单轮货运自行车在拥挤的城市街道运送包裹，因为它们很稳，而且能载重。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; 三角形连接电流systemelectronicsenergytechnologyelectrictechnicalphysicsmachineChat with AIVocabulary GamePractice Reading
noun🔗Share期权 Delta，对冲比率 The rate of change in an option value with respect to the underlying asset's price."A trader carefully watches the deltas of their options portfolio to understand how much profit or loss to expect if the underlying stock price moves by $1. "交易员会仔细观察他们的期权投资组合的 对冲比率 (期权 Delta)，以了解标的股票价格每变动 1 美元，他们预计会获得或损失多少利润。businessfinanceassetvaluestatisticsChat with AIVocabulary GamePractice Reading
noun🔗Shareδ值，同位素偏差 A value in delta notation indicating the relative abundances of isotopes."The geologist analyzed the deltas of carbon-13 isotopes in the ancient sediment to determine the past climate. "地质学家分析了古代沉积物中碳-13同位素的δ值（同位素偏差），以确定过去的氣候。chemistrygeologyphysicsscienceChat 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."In the Space Force, the newly established deltas are focused on specific mission areas like space surveillance and satellite communication. "在太空军中，新成立的三角洲部队专注于特定的任务领域，例如太空监视和卫星通信。militaryspaceorganizationgovernmentunitChat with AIVocabulary GamePractice Reading
