compact barrier in the soil 土壤中的紧实障
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.
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。
There is a new blasting technology which utilizes the explosion effect of the explosive to compact the soil to form the underground space with the non-compacted material as the cushion.
一种新型爆破工艺，需要采用不可压缩介质作垫层，利用炸药的爆炸作用对粘土进行挤压，形成地下空间。
Withtheir enormous size and weight, today's farm machines have significantdownside: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.
就其超大规模和重量而言，如今的农业器械有巨大的不利之处：它们会压紧泥土，从而减少了泥土间的空隙孔且杀死了有利的生物，这意味着作物不会很好的生长。
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