不同形状

You can differentiate between the houses by the shape of their chimneys.

凭借烟囱形状的不同来区分这两幢房子。

With certain shapes of or canula, elongated caps are made to cover both canula and threaded portion, and seal the canula at its top.

根据口和导的不同形状，制造细长的盖覆盖导和螺纹部分，并在顶部封住导。