excitation

简明释义

英[,eksaɪ'teɪʃ(ə)n]美[ˌeksaɪˈteɪʃn]

n. 激发，刺激；激励；激动

英英释义

单词用法

同义词

反义词

例句

1.AC excitation is a good solution to this problem.

交流励磁是一种好解法对这个问题。

2.It is their medium and utilization of complex verbiage creates essential stimulatory excitation for them.

这是他们的传播媒介，同时他们也利用复杂晦涩的词句给自己创造必要的刺激。

3.Each period of DC excitation and forced commutation drives is set with an external capacitor.

直流励磁时间和强制换向时间都由一个外部电容设定。

4.In these cases, the measured resistance is a function of the excitation time.

在这种情况下，测得的电阻是激励时间的函数。

5.The methods measuring excitation energies and temperature of highly excited nuclear matter and their reliability have been summarized.

评述了高激发核的激发能及核温度的测量方法，以及这些测量方法的可靠性。

6.Difficulties, excitation power forward; Setbacks, hone struggle of courage; Failure, indicate the direction of success.

困难，激发前进的力量；挫折，磨练奋斗的勇气；失败，指明成功的方向。

7.The scientist measured the level of excitation in the particles during the experiment.

科学家在实验中测量了粒子的激发水平。

8.The excitation of the atoms can lead to the emission of light.

原子的激发可以导致光的发射。

9.In quantum mechanics, excitation refers to an increase in energy states.

在量子力学中，激发指的是能量状态的增加。

10.The excitation of the audience was palpable during the concert.

音乐会期间，观众的激动是显而易见的。

11.Researchers observed the excitation of electrons when exposed to a laser.

研究人员观察到电子在激光照射下的激发。

作文

The concept of excitation is fundamental in various fields of science, particularly in physics and chemistry. It refers to the process by which an atom or a molecule absorbs energy, resulting in an increase in energy levels of its electrons. This phenomenon can be observed in everyday life, such as when we see fireworks lighting up the sky. The vibrant colors produced are due to the excitation of electrons in metal salts, which release energy in the form of light when they return to their ground state. In the realm of physics, excitation plays a crucial role in understanding atomic structures. When an electron in an atom absorbs a photon, it becomes excited and moves to a higher energy level. This state is temporary, and as the electron returns to its original state, it emits energy, often in the form of light. This principle underlies many technologies, including lasers and fluorescent lights. For instance, in a laser, the excitation of atoms leads to the emission of coherent light, which has numerous applications in medicine, communications, and entertainment. Similarly, in chemistry, excitation is vital for understanding reactions and bonding. When molecules absorb energy, they undergo excitation, which can lead to breaking bonds and forming new ones. This is particularly important in photochemistry, where light energy initiates chemical reactions. For example, photosynthesis in plants involves the excitation of chlorophyll molecules when they absorb sunlight, ultimately converting light energy into chemical energy stored in glucose. Moreover, excitation is not limited to the microscopic world; it can also be observed in macroscopic phenomena. In music, for instance, the excitation of air molecules produces sound waves that travel to our ears, allowing us to experience the beauty of melodies. When a musician plays an instrument, they create vibrations that cause the surrounding air particles to become excited, producing the sounds we hear. Understanding excitation also helps explain various natural phenomena. For example, the Northern Lights, or Aurora Borealis, are a stunning display caused by the excitation of atmospheric particles. When charged particles from the solar wind collide with gases in the Earth's atmosphere, they excite these gas molecules, resulting in beautiful colors dancing across the night sky. In conclusion, the term excitation encompasses a wide range of processes across different scientific disciplines. Whether it is the absorption of energy by electrons in atoms, the initiation of chemical reactions, or the production of sound waves, excitation is a key concept that helps us understand the world around us. Its implications extend beyond the laboratory, influencing technology, nature, and even art. By grasping the significance of excitation, we can appreciate the intricate connections between energy, matter, and the phenomena that shape our universe.

‘激发’这个概念在科学的多个领域中是基础性的，特别是在物理学和化学中。它指的是原子或分子吸收能量的过程，从而导致其电子能级的增加。这种现象可以在日常生活中观察到，例如当我们看到烟花照亮天空时。产生的鲜艳颜色是由于金属盐中电子的‘激发’，当它们返回到基态时释放出能量，以光的形式出现。 在物理学领域，‘激发’在理解原子结构方面起着至关重要的作用。当原子中的电子吸收光子时，它会被激发并移动到更高的能级。这个状态是暂时的，当电子返回到其原始状态时，它会发出能量，通常以光的形式出现。这个原理是许多技术的基础，包括激光和荧光灯。例如，在激光中，原子的‘激发’导致了相干光的发射，这在医学、通信和娱乐等多个领域有着广泛的应用。 同样，在化学中，‘激发’对于理解反应和键合至关重要。当分子吸收能量时，它们经历‘激发’，这可能导致键的断裂和新键的形成。这在光化学中尤为重要，其中光能启动化学反应。例如，植物中的光合作用涉及到叶绿素分子在吸收阳光时的‘激发’，最终将光能转化为储存在葡萄糖中的化学能。 此外，‘激发’不仅限于微观世界；它也可以在宏观现象中观察到。例如，在音乐中，空气分子的‘激发’产生声波，传递到我们的耳朵，让我们体验旋律的美。当音乐家演奏乐器时，他们创造的振动使周围的空气粒子被激发，产生我们所听到的声音。 理解‘激发’还有助于解释各种自然现象。例如，北极光或极光是由‘激发’大气粒子引起的惊人景象。当来自太阳风的带电粒子与地球大气中的气体碰撞时，它们激发这些气体分子，导致夜空中舞动的美丽色彩。 总之，‘激发’一词涵盖了不同科学学科中广泛的过程。无论是原子中电子吸收能量、化学反应的启动，还是声波的产生，‘激发’都是帮助我们理解周围世界的关键概念。它的影响超越了实验室，影响着技术、自然甚至艺术。通过掌握‘激发’的重要性，我们可以欣赏能量、物质以及塑造我们宇宙的现象之间错综复杂的联系。