segmental

Segmental duplication 貌似 分装式复制..

segmental lining [词典] 管片衬砌; 拼装衬砌; 单层衬砌; [例句]Composite shield is characterized by self-driving and cast in site reinforced concrete lining instead of segmental lining.组合式盾构的特点是能自行推进，可不用装配式衬砌管片，而采用现浇钢筋混凝土衬砌。