The facade is composed of a double curve of glass, very light and variable transparency.

Referring to the top of the table, he noted: "The double curve is repeated eight times.

When he was satisfied, he lifted the double curve from the side and screwed the two pieces together.

It always felt comfortable to him, this double curve of monitors and controls, and now he understood why.

A double curve in the huge river had appeared last and it disappeared first as the impenetrable curtain of semispace started to close once more.

Now try this"double curve using a 8cm horizontal line and a 4cm vertical line.

The double curve of the raven blurred and steadied and lit the space between them.

"I'm not sure, my lord, but there's a ridge just before the trees end, and a double curve in the road."

It was about 4 feet long, and generally shaped in a double curve.