主压缩 meaning in English

primary compression

The breaking of rockfill particles is decomposed into breaking due to compression and breaking due to rheology , corresponding to vibration compaction and rheological fineness respectively . the rheological breaking is relatd directly to stress and temperature
通过试验研究，将堆石颗粒的破碎分为主压缩变形破碎和流变破碎二种，分别对应于堆石在外力作用下的振动密实和伴随流变的颗粒细化。