1
compaction of [material]
compaction of 后接被压实的材料，多用于土壤、垃圾处理等场景。
The compaction of the soil was done with a heavy roller.
土壤的压实是用重型压路机完成的。
压实；压紧；夯实
先理解核心含义，再看它在真实句子里的用法。
压实；压紧；夯实
the process of pressing something together so that it becomes denser; an increase in density
The compaction of the soil was done with a heavy roller.
土壤的压实是用重型压路机完成的。
常指土壤、垃圾、粉末等经压力变得密实的过程。
压实的过程；被压实的东西。
The process of compacting something, or something that has been compacted.
The compaction of the soil by the heavy machinery improved the stability of the road.
重型机械对土壤的压实提高了道路的稳定性。
Poor compaction of the concrete can lead to weak spots in the foundation.
混凝土压实不足会导致地基出现薄弱点。
Engineers tested the compaction of the landfill before building on it.
工程师在填埋场上建造之前测试了其压实度。
compaction of 后接被压实的材料，多用于土壤、垃圾处理等场景。
The compaction of the soil was done with a heavy roller.
土壤的压实是用重型压路机完成的。
该复合名词形式常用于技术描述，指材料自身的被压实状态或过程。
Soil compaction can damage plant roots.
土壤压实会损害植物根系。
cause 后可直接接表示动作的名词，说明导致压实的原因。
Repeated machine use caused compaction of the subsoil.
反复使用机械导致底土层被压实。
Not this
The workers compaction the ground before laying the foundation.
Use this
The workers compact the ground before laying the foundation.
compaction 是名词，不能直接带宾语；此处需要及物动词 compact。中文说“压实地面”时，英语用动词 compact，而不是名词 compaction。
Not this
The soil is too compaction for planting.
Use this
The soil is too compact for planting.
compaction 是名词，不能用在 be 动词后作表语来描述性质；这里应用形容词 compact。中文的“土太实”对应形容词 compact，而不是其名词形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
土壤压实
Soil compaction reduces the amount of air and water in the ground.
土壤压实减少了土壤中的空气和水分。
垃圾压实
Waste compaction helps reduce the volume of rubbish before disposal.
垃圾压实有助于在处置前减少垃圾体积。
压实度试验
The engineer performed a compaction test on the foundation.
工程师对地基进行了压实度试验。
压实设备
Heavy compaction equipment is used to prepare the roadbed.
重型压实设备用于准备路基。
压实功
Increasing the compaction effort can make the soil denser.
增加压实功可以使土壤更密实。
压实层
Each compaction layer must be thin enough to compact evenly.
每个压实层必须足够薄，以便均匀压实。
Use compaction naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象散沙被压成紧密的块（compact），密度增加——compaction 就是“压实、压紧”。
语域：formal 常见场景：civil engineering、waste management、materials science compaction 通常出现在土木工程、垃圾处理、材料科学等正式或技术性书面语境，表示压实或压紧的过程；日常对话中较少使用。
这些词都以 -action 结尾，读作 /ækʃən/，与 compaction /kəmˈpækʃən/ 押韵（重读元音 /æ/ 后接 /kʃən/）。注意拼写相似的 connection /kəˈnekʃən/ 和 protection /prəˈtekʃən/ 元音是 /e/，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.