They all pulled out of the dive at 20,000 feet and went down to the ground in a flat curve.
From where they stood, the Bay was silver and white, smooth as glass in long flat curves offset by choppy glittering expanses of water.
Then from the tracking room: "Shockwave echos with flat curves.
The path of its crash resembled that of a stone thrown in a flat curve.
The keratometer determines the steepest and the flattest curves.
Pitt swung the boat in a flat curve to the left, throwing off his aim.
Her head turned slightly so that the flat curve of her cheek was outlined in the soft light filtered by the shoji.
Decelerating sharply, he dropped in a long, flat curve toward the treetops.
Additionally some manufacturers may verge toward a slightly flatter curve.
For most people, an oxymoronic flat curve means keeping your money in the most liquid forms.