allotropy

allotropy的音标是[ˌæləˈtrəʊsɪs]，意思是“同质多态”。基本翻译是“同质多态性”或“同质多形体”。速记技巧是注意单词中间的“all”字母，它在这里起到一个帮助记忆的作用。

Allotropy这个词来源于希腊语词根，意为“变化形式”或“变种”。其词源中的希腊语词根“allos”意为“其他的”或“不同的”，而“tropos”意为“变化”。

变化形式的相关单词：

1. polymorphism（多态性）：指一个物体或系统具有多种不同的表现形式。

2. polymorphism（同素异形）：指同一种物质由于内部结构不同而呈现不同的形态。

3. metamorphism（变质）：指岩石或矿物在高温高压等外部条件下的变化。

4. crystallization（结晶）：指物质从液体或气体状态转变为固体或晶体状态。

5. polymorphism（同素异形性）：指在相同元素中由于内部结构不同而形成的不同形态。

相关变化形式：

1. Allotropes of carbon（碳的同素异形体）：碳元素可以形成石墨、钻石、富勒烯等不同形态。

2. Allotropes of oxygen（氧的同素异形体）：氧元素可以形成氧气、臭氧等不同形态。

3. Allotropes of hydrogen（氢的同素异形体）：氢元素可以形成氢气、氚等不同形态。

以上这些变化形式都与allotropy有密切关系，因为它们都是同一元素的不同表现形式。这些单词在描述物质的不同形态和性质时非常有用。

Allotropy 相关的常用短语：

1. Allotropy of a mineral 矿物的变体

2. Change in allotropy 矿物的变体变化

3. Secondary allotropy 次生变体

4. Allotropy of a metal 金属的变体

5. Allotropy of a crystal 晶体的变体

6. Allotropy of a substance 物质的变体

7. Allotropy in rocks 岩石中的变体

双语例句：

1. The minerals in the region have different allotropes at different temperatures and pressures. 在该地区的矿物质在不同的温度和压力下具有不同的变体。

2. The metal undergoes allotropy changes at high temperatures. 在高温下，金属会发生变体变化。

3. The crystal"s allotropy depends on its temperature and pressure. 该晶体的变体取决于其温度和压力。

4. The substance undergoes allotropy at low temperatures, changing from a solid to a liquid. 在低温下，该物质会发生变体变化，从固态变为液态。

5. The rocks in this area have different allotropes of minerals at different temperatures and pressures. 这个地区的岩石在不同的温度和压力下具有不同的矿物的变体。

6. Secondary allotropy is a type of phase change that occurs when a crystal transforms into a different form of itself, usually due to temperature or pressure changes. 次生变体是一种类型的相变，当晶体自身转变为不同的形式时发生，通常是由于温度或压力的变化。

7. Allotropy is an interesting phenomenon that can be observed in many different types of substances and materials. 变体是一个有趣的现象，可以在许多不同类型的物质和材料中观察到。

英文小作文：

Allotropy is a fascinating phenomenon that can be observed in many different types of substances and materials. It refers to the phenomenon where a substance undergoes a change in its physical form, usually due to changes in temperature or pressure, resulting in a different crystal structure or phase. This phenomenon is particularly interesting because it demonstrates how matter can change its form in response to external stimuli such as temperature or pressure changes.

For example, minerals have different allotropes at different temperatures and pressures, and this can have significant implications for their physical properties and behavior. Similarly, metals undergo allotropy changes at high temperatures, resulting in different forms of the metal that may have different properties and applications. In addition, alloys can undergo phase changes due to alloying elements changing their state, resulting in different allotropes of the alloy itself.

Allotropy is also important in understanding the behavior of materials under extreme conditions such as high pressures and temperatures, as well as in studying the evolution of materials over time. Understanding allotropy can help us better understand the behavior of materials and develop new ones with unique properties and applications.