催化剂活性安定性
catalyst activity stability
航向中性安定性
neutral heading stability
表面改性天然斜发沸石
surfactant-modified clinoptilolite
磁性天然沸石
magnetically modified zeolite
低温改性天然橡胶
low-temperature modified nature rubber
点特异性天然同位素分馏核磁共振技术
site-specific natural isotope fractionation-nuclea
改性天然高分子
Modified-natural-macromolecule
modified natural-macromolecule
modified natural high molecular polymer
改性天然高分子钻井液
modified natural high polymer drilling fluid
改性天然石墨
Modified natural graphite
功能性天然色素
functional natural colorants