A rare galaxy type, polar ring galaxies have a substantial population of stars, gas, and dust orbiting in rings nearly perpendicular to the plane of the galactic disk.
极环星系是种稀有的星系类型，它们有着几乎和银盘平面垂直，呈环形公转的大量的恒星、气体和星尘。
Sometimes, one type of lateral load mechanism is used in one direction while another is used in the perpendicular direction.
有时，一种类型的侧向载荷机制作用于一个方向，而另一种作用于垂直方向。
Type steels are a kind of light economic section shaped steel with the perpendicular among thin-walls, girths and web plates.
型钢是一种轻型薄壁、翼缘与腹板垂直的经济断面型钢。
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