fining

These basins were generally filled with upward fining and deepening sedimentary sequence that comprises nonmarine to marine, shallow marine to deep marine depositional systems.

盆地内堆积了从陆相到海相，从浅水到深水的各种沈积体系，组成向上变细和变深的充。

The exploratory testing study of modifying and fining the solidification structure of concast steel billet is carried out in concast production by the technology of electro-pulse modification.

产中利用电脉冲孕育处理技术,开展改善和细化坯凝固组织的试验研究。