Word · Frequency #28925
scalar
标量;纯量
a variable quantity that cannot be resolved into components
- 1.
A quantity that has magnitude but not direction.
只有大小没有方向的量。
- 2.
An amplifier whose output is a constant multiple of its input.
输出为其输入常数倍的放大器。
只有大小没有方向的量。;输出为其输入常数倍的放大器。;数量;纯量
In use
In math class, the teacher explained that a scalar has only magnitude, not direction.
When multiplying a vector by a scalar, the direction of the vector does not change.
In this physics problem, you must first identify which values are scalars and which are vectors.
be a scalar
scalar作名词时,指只有大小、没有方向的量。
Mass is a scalar, not a vector.
质量是标量,不是矢量。
scalar + noun
scalar作形容词,表示“标量的”,可修饰field(场)、quantity(量)等名词。
The temperature distribution in the room is a scalar field.
房间内的温度分布是一个标量场。
Common mistakes
This system is highly scalar.
Connections
Collocations
- scalar quantity
- 标量(只有大小没有方向的量)
- In physics, mass is a scalar quantity.在物理学中,质量是一个标量。
- scalar field
- 标量场
- The temperature distribution in a room can be modeled as a scalar field.房间里的温度分布可以建模为标量场。
- scalar product
- 标量积,点积
- The scalar product of two vectors is a number.两个向量的标量积是一个数值。
- scalar multiplication
- 标量乘法
- In linear algebra, scalar multiplication is defined for vectors and matrices.在线性代数中,标量乘法定义在向量和矩阵上。
- scalar value
- 标量值(单个数值)
- A scalar value represents a single number, not a vector.标量值表示单个数值,而不是向量。
- scalar variable
Learner notes
Memory Tip
scalar 形似 scale(刻度/音阶),标量就像数轴上的一个刻度:只有大小,没有方向。
Context & Register
语域:formal 常见场景:mathematics、physics、computer science scalar 在数学、物理和计算机科学等领域通常作正式术语,多用于学术或技术写作;日常口语中较少出现。
Pronunciation & Spelling
真正押韵的有 sailor /ˈseɪlə/ 和 scaler /ˈskeɪlə/(后者与 scalar 同音,尤其在非儿化口音中)。scalene /ˈskeɪliːn/ 虽然也以 scal- 开头并读 /skeɪl/,但结尾不同,不押韵;scallop /ˈskɒləp/ 拼写中的 scal 读作 /skɒl/,元音差别很大。不要光看拼写判断发音。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.