扩大参数 meaning in English

extensive parameter

Did you try widening the parameters
你有没有试过扩大参数？
Advanced technical ceramics . monolithic ceramics . mechanical properties at room temperature . determination of subcritical crack growth parameters from constant stressing rate flexural strength tests
高技术陶磁.整体陶磁.室温下的机械性能.第3部分:从恒定应力率挠性强度试验中测定亚临界裂缝扩大参数值