angle of repose

angle of repose的音标是[ˌæŋɡəʊ əʊ ˈrɪpəz]，基本翻译是“倾角；安息角”，速记技巧是“安息角=躺下休息的角=倾角”。

Angle of Repose这个词的词源可以追溯到拉丁语和希腊语。它的意思是“容限角度”或“稳定倾斜角”。这个词是由“容许”（repose）和“角度”（angle）组成的合成词。

变化形式：在英语中，Angle of Repose通常被简称为Ro，有时也被写作θRo。

相关单词：

Repose：这个词本身就有“休息”的含义，可以引申为“稳定状态”或“静止状态”。

Resist：这个词来源于拉丁语，有“抵抗”的含义，可以用来描述物体在斜面上抵抗下滑的趋势。

Resistance：这是一个相关的单词，表示“抵抗”或“阻力”。

Resolute：这个词来源于拉丁语，有“坚决”的含义，可以用来形容在处理问题时态度坚决的人。

Inclination：这个词来源于拉丁语，表示“倾斜”或“倾向”。

Incline：这个词本身就有“倾斜”的含义，可以用来描述一个物体在斜面上的状态。

Decline：这个词来源于拉丁语，有“下降”或“衰退”的含义，可以用来描述物体在斜面上逐渐下滑的过程。

Sloping：这个词本身就表示“倾斜”或“斜坡”，可以用来描述一个物体在斜面上的位置。

Lateral：这个词来源于拉丁语，有“横向的”或“侧面的”含义，可以用来描述一个物体在斜面上的侧向移动。

以上单词都与Angle of Repose有直接或间接的联系，并且描述了物体在斜面上的各种状态和行为。

angle of repose：

1. 坡度角

2. 自然倾角

3. 休止角

4. 沉积角

5. 沉积角大小

6. 沉积物休止角

7. 沉积物稳定角

双语例句：

1. The angle of repose of a pile of sand is about 30 degrees.

一堆沙子的休止角约为30度。

2. The angle of repose of a pile of soil is determined by its density and moisture content.

土壤的休止角由其密度和含水量决定。

3. The angle of repose of a pile of sandstone blocks is much smaller than that of sand.

砂石块的休止角比沙子的小很多。

4. The angle of repose of sediment particles is affected by the sediment source and sediment transport environment.

沉积颗粒的休止角受到沉积源和沉积环境的影响。

5. The angle of repose of a pile of sand can be used to predict its stability and erosion resistance.

一叠砂的休止角可以用来预测其稳定性和抗侵蚀性。

6. The angle of repose of a pile of gravel is affected by its size and shape.

一堆砾石的休止角受到其大小和形状的影响。

7. The angle of repose of a pile of clay is much smaller than that of sand or gravel.

粘土的休止角比砂或砾石小得多。

英文小作文：

The angle of repose is an important concept in sedimentology, which refers to the angle at which sediment particles tend to rest on a slope or pile without sliding or rolling down. It is determined by the physical properties of the sediment particles, such as size, shape, density, and cohesion, as well as the environmental factors such as the slope angle, moisture content, and wind velocity.

In my opinion, the angle of repose plays a crucial role in sediment transport and deposition processes, affecting the stability and erosion resistance of sediment piles and dunes, as well as the formation and evolution of sedimentary landscapes. Therefore, it is essential to understand the factors that influence the angle of repose in order to better predict and manage sedimentary environments.