Does this mean space is shaped like a flat plane, a sphere or a saddle?

是不是这就意味着宇宙的形状就是平面、封闭球体或者马鞍状？

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In these the needles are arranged parallel to each other in a flat plane.

在横机上，针在一个平面上平行排列。

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Organic light-emitting device (OLED) is a promising candidate for next generation flat plane display (FPD).

有机电致发光器件(OLED)的一个重要用途是在平板显示领域。

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He said it was lucky that the plane landed flat in shallow water rather than nosediving or hitting deep water where it could have quickly been submerged.

NPR: Investigators Probe Lion Air Crash In Bali

For the first time in the airline's history, business class saw higher percentages of seats filled than coach, said Singapore spokesman James Boyd, so the airline switched to a luxurious all-business-class configuration, with 100 lie-flat beds on a plane big enough to carry more than 300 passengers.

WSJ: The World's Longest Flight, in Coach

And experimentation is what facilitated their arrival as rising design stars: Simon and Nikolai used flat hexagonal brass tiles—typically able to adjoin only on a horizontal plane—to clad the rounded surfaces of a footstool for an exhibit of functional objets d'art at Manhattan's R 20th Century Design gallery.

WSJ: The Wonder Twins of the Design World: Nikolai and Simon Haas | Designers