chelating agent sequestering agent  螯合剂

chelating agent sequestering agent：sequestrant  钳合剂

chelating agent：sequestering agent：sequestrant  钳合剂

sequestering agent chelating agent  螯合剂

sequestering agent chelating agent：sequestrant  钳合剂

sequestering agent：chelating agent：sequestrant  钳合剂

alluvial depositional system  冲积沉积体系

Atmospheric depositional dust  大气降尘

Braided delta depositional system  辫状河三角洲体系

braided river depositional system  辫状河沉积

coal depositional model  煤沉积模式

Coal Depositional System  含煤沉积体系

coal measures depositional environment  煤系沉积环境

coal-depositional environment  成煤环境

collapse—depositional rock  塌积岩

Delta Depositional System  三角洲沉积体系

Delta depositional system and characteristics of each phase  三角洲沉积体系各亚相的特征

delta littoral depositional system  三角洲—滨岸沉积体系

deposihonal cycles  力沉积旋回

deposilional model  沉积模式