缘带 meaning in English

border zone
limbic bands
marginal zone

Aerospace - anchor nuts with mj thread , deep counterbore , self - locking , non - floating , corner , steel ; classification : 1100 mpa 235 c
航空航天.自锁非浮动钢制角缘带mj螺纹深埋头锚定螺母
According to the characteristics of strata , tectonization and magmatism within the research area in the southwest margin of north china paleocontinent , and under the ideological guidance of mobilism and systematology , the geotectonic framework of the area could be divided as follows : ( 1 ) the longshoushan mountains continental margin ; ( 2 ) the hexi corridor back - arc basin ; ( 3 ) the northern qilianshan mountains suture zone ; ( 4 ) the central qilianshan mountains dispersion type island arc terrane ; ( 5 ) the southern qilianshan mountains back - arc basin ; ( 6 ) the qaidam massif
根据本区地层、构造、岩浆作用特点，在“系统论” 、 “活动论”思想指导下，厘定华北古大陆西南边缘的构造格局如下：龙首山陆缘带、河西走廊弧后盆地、北祁连缝合带、中祁连离散型岛弧地体、南祁连弧后盆地、柴达木地块。