isotopes background
BeDict Logo

isotopes

/ˈaɪsətoʊps/

Meanings
noun

同位素

Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. As a consequence, atoms of isotopes will have the same atomic number but a different mass number.

Examples :

"Carbon has several isotopes, including carbon-12 and carbon-14, which scientists use in dating ancient artifacts. "
碳有好几种同位素，包括碳-12和碳-14，科学家们用它们来测定古代文物的年代。
element chemistry physics science substance

Related Words

Illustration including

including verb

/ɪnˈkluːdɪŋ/

包括，包含，涵盖。

"I will purchase the vacation package if you will include car rental."

如果你能把租车费用也包含进去，我就买这个度假套餐。

Illustration neutrons

neutrons noun

/ˈnjuːtrɒnz/ /ˈnuːtrɒnz/

中子

"The nucleus of a helium atom contains two protons and two neutrons. "

氦原子的原子核包含两个质子和两个中子。

Illustration several

several noun

/ˈsɛv(ə)ɹəl/

几块私有土地, 私人 земельный участок

"The family owns several, a small plot of land behind their house. "

这家人拥有几块私有土地，就在他们房子后面有一小块。

Illustration element

element noun

/ˈɛlɪmənt/

要素，成分，元素。

"Letters are the elements of written language."

字母是书面语言的基本要素。

Illustration different

different noun

/ˈdɪf.(ə)ɹ.ənt/

差别，差异。

"My family has a different ideal for my future than I do. "

对于我的未来，我的家人和我的理想存在差别。

Illustration scientists

scientists noun

/ˈsaɪəntɪsts/

科学家，科研人员。

"Scientists study plants to understand how they grow. "

科学家研究植物，从而了解它们的生长方式。

Illustration protons

protons noun

/ˈpɹoʊtɑnz/

质子

"The number of protons in an atom's nucleus defines what element it is. "

原子核内的质子数量决定了该原子是什么元素。

Illustration ancient

ancient noun

/ˈeɪn.ʃənt/

古人，老人

"The ancient librarian was known for her vast knowledge of history. "

这位年迈的图书管理员以她渊博的历史知识而闻名。

Illustration artifacts

artifacts noun

/ˈɑːrtɪfækt͡s/ /ˈɑːrtəfækt͡s/

文物，手工制品.

"The museum displayed ancient pottery and tools as historical artifacts of the early settlers. "

博物馆展出了古代陶器和工具，作为早期定居者的历史手工制品。

Illustration within

within adjective

/wɪˈθɪn/ /wɪðˈɪn/

本文的，此范围内的

"the within appeal"

本文的上诉

Illustration number

number noun

/ˈnʌmbə/ /ˈnʌmbɚ/ /ˈnʌmə/ /ˈnʌmɚ/

数字，号码

"Zero, one, −1, 2.5, and pi are all numbers."

零、一、负一、二点五和π都是数字。

Illustration consequence

consequence noun

/ˈkɒnsɪkwɛns/ /ˈkɑnsɪkwəns/

后果，结果。

"If you miss your curfew, a consequence is having to stay inside and do chores. "

如果你错过了门禁时间，后果就是必须待在家里做家务。