1) arcuate welt
弧形缘地
2) rounded gunwale
弧形舷缘
3) arc region
弧形地带
1.
In recent years, with the development of Extremist groups and the increase of violence conflicts in the global scope, it has formed fearful terrorism of arc region from the Middle East to central Asia to South Asia to Southeast Asia.
近些年来,伴随着全球范围内极端势力的上升和暴力冲突加剧,在中东-中亚-南亚-东南亚地区逐渐形成了一个恐怖高危弧形地带。
4) arc trough
弧形地堑
6) arcuate islands,island arc
弧形列岛<地>
补充资料：6机6流小方坯弧形连铸(沙钢)
6机6流小方坯弧形连铸(沙钢)
鑫6机6流刁、方坯弧形连铸(沙钢)
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