1) vermicularity degeneration
蠕化衰退
2) involution
[英]['invə'lju:ʃən] [美][,ɪnvə'luʃən]
衰退，退化
3) fading of refinement
细化衰退
4) nodularization degeneration
球化衰退
1.
The reason causing nodularization degeneration in surface layer of furan resin sand nodular iron castings was analyzed.
对呋喃树脂砂球墨铸铁件表层球化衰退原因进行了分析。
2.
A effective method to eliminate nodularization degeneration was introduced with emphasis laid on materials and process.
着重从材料和工艺两方面介绍一种消除球化衰退的有效方法。
6) degradation & aging
衰退老化
补充资料：蠕活
1.慢慢地活动。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条