apparent density的音標是[??p?r?nt ?dens?t?]，基本翻譯是“表面密度”，速記技巧是“apparent”可以縮寫為“ap”。表面密度是指物體在單位體積或單位面積上具有的質量或密度。

Apparent density 的英文詞源是拉丁語“apparentia”和“densitas”，意為物質在液體或氣體中的堆積程度。

變化形式：英式英語中，density（n.）和apparent（adj.）都與該詞源有關。

相關單詞：

1. density - 密度，表示物質在空間中的堆積程度。

2. dense - 密集的，表示物質在空間中堆積緊密。

3. densely - 密集地，表示物質在空間中堆積緊密地。

4. densification - 密集化，表示物質在空間中堆積程度的增加。

5. density gradient - 密度梯度，表示物質在液體或氣體中堆積程度的變化。

6. density-based - 基于密度的，表示基于物質堆積程度的分析方法。

7. density-dependent - 密度依賴的，表示物質在特定環境中的堆積程度與其它因素有關。

8. density-reducing - 減少密度的，表示通過某種方法降低物質的堆積程度。

9. density-specific heat - 密度特定熱容，表示物質在特定密度下的熱容。

10. apparent density - 表觀密度，表示物質在容器中的堆積程度，通常用于評估材料的體積和質量關系。

短語：

1. apparent density of water

2. apparent density of sand

3. apparent density of cement

4. apparent density of soil

5. apparent density of air

6. apparent density of metal

7. apparent density of plastic

例句：

1. The apparent density of water is a crucial factor in determining its boiling point.

2. The apparent density of sand determines its sedimentation rate in water.

3. The apparent density of cement determines its strength and durability.

4. The apparent density of soil determines its water retention capacity and permeability.

5. The apparent density of air determines its compressibility and buoyancy.

6. The apparent density of metal determines its weight and strength.

7. The apparent density of plastic determines its hardness and wear resistance.

英文小作文：

The importance of apparent density in materials science and engineering is significant, as it affects various properties such as strength, weight, water retention, and compressibility. For example, the apparent density of water determines its boiling point, while the apparent density of sand determines its sedimentation rate in water. Similarly, the apparent density of cement determines its strength and durability, while the apparent density of plastic determines its hardness and wear resistance. Therefore, it is crucial to carefully measure the apparent density of materials to ensure their optimal performance and safety in various applications.