semi-arch
美
英 
例句
Silent meaning The word not spoken goes not quite unheard. It lingers in the eye, in the semi-arch of brow.
无声的语言,并非完全听不见。它荡漾在眼波里,表露在眉宇间。
Since lump size of upper-immediate roof is large, a semi-arch equilibrium structure of the stratum-rock sometimes can be formed.
上位直接顶岩块强度较高、块度较大,容易形成“岩-矸”半拱式平衡结构。