压实 [建] compaction ; consolidation
土壤压实 [土壤] soil compaction ; soil compression
压实度 degree of compaction ; compaction degree
压实系数 compacting factor ; compaction coefficient
高压实验 High-Voltage Experimentation
实际电压比 actual voltage ratio ; true voltage ratio
欠压实 uncompaction
压实试验 [建] compacting test
深层压实 deep compaction
振动压实机 vibrating compactor ; vibratory compactor ; vibrating tamper
沉积物分选越差或压实越紧，其孔隙度和渗透率就越低。
The more poorly sorted or the more tightly compacted a sediment is, the lower its porosity and permeability.
由于庞大的体积和重量，现在的农业机械有显著的缺点：它们会把土壤压实，降低土壤孔隙度，杀死有益的生命，这意味着农作物不会长得太好。
With their enormous size and weight, today's farm machines have significant downsides: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.
沉积物的分选和压实作用影响渗透率和孔隙度。
Sediment sorting and compaction influence permeability and porosity.
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