pion

/ˈpaɪɒn/

Meanings

noun

π介子

Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks.

Examples :

"Inside the particle accelerator, scientists observed the fleeting existence of a positively charged pion before it decayed. "

在粒子加速器内部，科学家们观察到了一个带正电的π介子短暂存在，然后迅速衰变。

physics element

Related Words

neutral noun

/ˈnjuːtɹəl/ /ˈnuːtɹəl/

中立，中立国

"Switzerland is a neutral in international conflicts. "

瑞士在国际冲突中是一个中立国。

fleeting verb

/ˈfliːtɪŋ/

漂浮，飘荡。

"The dandelion seeds floated, or fleeting, on the gentle breeze. "

蒲公英的种子在微风中漂浮，飘荡，仿佛在轻轻地飞舞。

positively adverb

/ˈpɒzɪtɪvli/

积极地，正面地.

"He approached the interview positively."

他以积极的态度参加了面试。

composed verb

/kəmˈpəʊzd/ /kəmˈpoʊzd/

组成，构成。

"The editor composed a historical journal from many individual letters."

编辑将许多单独的信件汇编成了一本历史期刊。

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。

accelerator noun

/æk.ˈsɛl.ə.ˌɹeɪ.tɚ/

加速器，促进者

"The new exercise program acted as an accelerator for my weight loss. "

这个新的锻炼计划加速了我的减肥进程.

observed verb

/əbˈzɜːvd/ /əbˈzɝvd/

观察，观测，注意到

"From this vantage point we can observe the behavior of the animals in their natural habitat."

从这个有利位置，我们可以仔细观察动物们在自然栖息地中的行为。

particle noun

/ˈpɑːtɪk(ə)l/ /ˈpɑɹtɪkəl/

粒子，微粒

"The scientist studied the tiny particle of dust. "

科学家研究了那颗极其微小的尘埃粒子。

negative noun

/ˈnɛ(e)ɡəˌɾɪv/ /ˈnɛɡətɪv/ /-ɾɪv/

否决，否定，反对。

"The teacher's negative on the project proposal meant we had to revise it completely. "

老师对项目提案的否决意味着我们必须彻底修改它。

existence noun

/ɛɡ.ˈzɪs.təns/

存在, 生存, 存在状态

"In order to destroy evil, we must first acknowledge its existence."

为了消灭邪恶，我们必须首先承认它的存在。

positive noun

/ˈpɒzɪ̈tɪv/ /ˈpɑzɪ̈tɪv/

实在的事物，真实的事物。

"The positive of finishing the project early is a bonus week of vacation. "

提前完成项目的好处是可以额外获得一周的假期，这是实实在在的。

antiquarks noun

/ˌæntiˈkwɑːrks/ /ˌæntaɪˈkwɑːrks/

反夸克

"Scientists study how quarks and antiquarks combine to form different types of matter. "

科学家研究夸克和反夸克是如何结合形成不同种类的物质的。