n.符号，(数学、科学和音乐中的)记号，谱号

原形：notation复数：notations

Eric made a notation on his calendar.
埃里克在日程上作了记号。
Tom noticed the notations in the margin.
汤姆注意到了页边空白处的注解.
**Notation:** The symbol "π" represents the ratio of the circumference of a circle to its diameter.
**** 符号“π”表示圆的周长与其直径的比例。
**In mathematical notation, "x^n" denotes x raised to the power of n.**
**** 在数学记号中，“x^n”表示x的n次方。
**The chemical notation H2O signifies water, indicating two hydrogen atoms bonded to one oxygen atom.**
**** 化学符号H2O代表水，表示两个氢原子与一个氧原子结合。
**Music notation uses a staff with notes and clefs to represent musical pitches and rhythms.**
**** 乐谱记号使用带有音符和谱号的五线谱来表示音乐的音高和节奏。
**The arrow notation "f: A → B" signifies that function f maps set A to set B.**
**** 箭头记号“f: A → B”表示函数f将集合A映射到集合B。
**In set notation, "{1, 2, 3}" denotes the set containing the numbers 1, 2, and 3.**
**** 在集合记号中，“{1, 2, 3}”表示包含数字1、2和3的集合。
**The logical notation "p ∧ q" stands for the conjunction "p and q," expressing that both p and q must be true.**
**** 逻辑记号“p ∧ q”代表合取“p并且q”，表示p和q都必须为真。
**Physics equations often use Einstein's summation convention, where repeated indices imply summation, as a shorthand notation.**
**** 物理方程常采用爱因斯坦求和约定作为简写记号，其中重复的指标暗示求和。
**Chess notation records moves using algebraic notation, such as "e4 e5," indicating a pawn move from the e-file to the fourth rank to the fifth rank.**
**** 国际象棋记谱法使用代数记谱，如“e4 e5”，表示一枚兵从e列的第四行走到第五行。
**Linguistic notation employs symbols like棵树 [ˈlæŋɡwɪstɪk] to transcribe the pronunciation of words.**
**** 语言学记号使用诸如[ˈlæŋɡwɪstɪk]这样的符号来转录单词的发音。