oblong-hole screen 椭圆孔筛
Think of a three-dimensional spherical black hole that's copied and stacked out in one direction to create an oblong shape.
设想一个三维的球状黑洞，把它复制和堆放在一个方向上，就会构成一个长方形的形状。
The neck portion has an oblong first mounting hole (24) and a generally round second mounting hole (25).
所述颈部部分具有椭圆形的第一安装孔(24)和大体上圆形的第二安装孔(25)。
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