Tennis bubble

What is called a “tennis bubble” in tennis?

What does a “tennis bubble” stand for?

Tennis Bubble is a kind of indoor tennis facility made out of a domed structure which is supported by air pressure made from blowers set within the structure. These blowers are also used to control the climate inside the bubble as well as for ventilation. A tennis bubble is also termed an air-supported structure and is considered relatively efficient and inexpensive to construct.

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