The International Tennis Federation is using an automated testing machine to ensure that tennis balls meet its tough standards. The machine performs a battery of tests without needing any human intervention. The International Tennis Federation (ITF) has taken delivery of a machine that allows it to...
(1)Do you like table tennis?If you had travelled to cities in the UK like London or Birmingham last summer,you might have seen one of the dozens of free tables that were there as part of a project(项目)called Ping!.(2)What is Ping!Ping!is a three-year table tennis project.It has...