acute angle

1.Angles of less than 90 degrees are called acute angles.

小于90的叫。

2.The characteristic of hyphae are regular width and septation with typical branching in acute angle (about 45 degrees) in PAS stain.

理切片经由PAS染色清楚可见麴菌菌丝，其具有分隔，且分枝呈状，约45，为其特徵。

3.In contrast to prominent ear with underdeveloped antihelix fold, over-convex-antihelix ear reveals a sharp acute angle of antihelix and over-concaved scapha.

摘要相对于“朝风耳”的对耳轮过平坦且外翻，对耳轮过则是厉害的对耳轮及舟状部内陷。