2) triple ply belt
三层皮带
3) three layer tape
三层胶带
4) triple split brush with separate top-piece
带顶三叠层电刷
5) dual-grade triple split brush with separate top-piece
带顶双质三叠层电刷
6) three zones
三带
1.
Actual measurement analysis of three zones of goaf of 14308 working face with fully mechanized caving method of Dong tan Mine;
东滩矿14308综放面采空区三带实测分析
2.
Study on distributing law of "three zones" and spontaneous combustion danger in the gob of fully-mechanized caving mining;
综放面采空区“三带”规律及自燃危险性研究
3.
Study on "three zones"of mined-out area and spontaneous combustion danger of workface 2106 in ChangCun coalmine;
常村煤矿2106综放面采空区“三带”规律及自燃危险性研究
补充资料：三层大，二层小
1.谓家庭中人口众杂，上辈之上还有上辈，下辈下面还有下辈。
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