Many residual arcs and back arc basins exist between the frontalarc and Eurasia continent.
介于前缘弧和欧亚大陆之间的是众多的残余弧和弧后盆地。
2
Lincang arc and Cathaysian arc probably served as the frontalarc of Huanan archipelago, playing the similar role as Indonesian arc in Eurasia continent today.
临沧弧和华夏弧可能为华南多岛海的前缘弧，起着与今天欧亚大陆的印度尼西亚弧相类似的作用。
3
The radian of the arc-shaped blade can be adjusted, the frontal area and the lateral faces are provided with the knife edges, and the watermelon seeds can be removed sanitarily and conveniently.