planform

1.Simply put, a delta-wing is a triangular wing planform.

简单地说，三角翼就是三角型翼。

2.The observed deltas are highly two-dimensional in planform, adopting palmated structures which retain throughout their evolution a high degree of mirror symmetry.

实验观三角洲，为一高度维蹼狀发展且镜构造。