如题所述
保持稳定Remained stable; Stable; Keep Stable; remain steady;
[例句]在PEG溶液中,溶胀率在第1周显著下降,然后保持稳定不变,半降解水凝胶的孔隙率出现下降趋势。In PEG solution, the swelling ratio decreased dramatically in the first week and then remained stable without any change。