spectrum background

spectrum

/ˈspektɹəm/ /ˈspɛkt(ʃ)ɹəm/

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noun

范围，光谱，幅度

A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.

Examples :

"The spectrum of emotions my sister displayed during the argument was wide, from anger to sadness to confusion. "

在这场争论中，我妹妹表现出的情绪范围很广，从愤怒到悲伤再到困惑，各种各样的情绪都有。

range type aspect system toefl

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noun

光谱

Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.

Examples :

"The rainbow demonstrates the visible spectrum of light, showing all the colours from red to violet. "

彩虹展示了可见光谱，呈现了从红色到紫色的所有颜色。

physics astronomy energy frequency color science toefl

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noun

自闭症谱系

The autism spectrum.

Examples :

"My cousin has autism; his behavior falls within the autism spectrum. "

我的表弟患有自闭症，他的行为表现属于自闭症谱系。

medicine mind condition toefl

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noun

光谱，波谱。

The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).

Examples :

"The scientist examined the spectrum of light emitted by the burning candle flame. "

科学家检查了燃烧的蜡烛火焰发出的光的波谱。

physics energy science phenomena range toefl

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noun

谱, 特征值集合

The set of eigenvalues of a matrix.

Examples :

"The spectrum of possible test scores for the math exam ranged from 60 to 100. "

这次数学考试可能出现的成绩谱，或者说特征值集合，范围是从60到100.

math technical toefl

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noun

谱，光谱。

Of a bounded linear operator A, the set of scalar values λ such that the operator A—λI, where I denotes the identity operator, does not have a bounded inverse; intended as a generalisation of the linear algebra sense.

Examples :

"The spectrum of possible outcomes for the student's final exam grade shows a wide range of possibilities, from a failing mark to an A+. "

学生期末考试成绩的可能结果构成了一个范围广泛的谱，从不及格到A+都有可能。

math science technical physics toefl

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noun

素谱

(abstract algebra) The set, denoted Spec(R), of all prime ideals of a given ring R, commonly augmented with a Zariski topology and considered as a topological space.

Examples :

"The spectrum of possible grades on the math exam included all the prime numbers from 2 to 100. "

数学考试可能出现的分数组成了一个“素谱”，包含了2到100之间的所有质数（素数）。

math abstract space toefl

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noun

幽灵，鬼魂

Specter, apparition.

Examples :

"The angry accusations from the teachers seemed like a menacing spectrum hanging over the entire school. "

老师们愤怒的指责仿佛是一个充满威胁的幽灵，笼罩着整个学校。

appearance supernatural being toefl

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noun

幻影，景象，鬼影

The image of something seen that persists after the eyes are closed.

Examples :

"After looking at the vibrant sunset, a spectrum of orange and pink colors remained in my mind's eye. "

看完那绚丽的日落后，我的脑海中还残留着一片橙色和粉色的幻影。

mind sensation phenomena toefl