求翻译：现场放置陶瓷、钢、玻璃、石材等常用制表材料，邀请VIP及媒体上台与明星共同亲身感受材质硬度，竞猜其坚硬指数。是什么意思？

Site to place ceramic, steel, glass, stone and other materials commonly used in watchmaking, and invited VIP and media came together to experience the material hardness star, quiz its hard index.

On-the-spot placed ceramic, steel, glass, stone, and other commonly used tabulation materials and media, to invite VIP came together with the Stars feel material hardness, guessing its hardness index.

The scene laying aside ceramics, the steel, the glass, the stone material and so on the commonly used scheduling material, invites VIP and the media comes on stage with the star by oneself feels the material quality degree of hardness together, competes guesses its hard index.

Placed ceramic, steel, glass, stone and other commonly used tab material, invitation to VIP and media came together with the stars feel the material hardness, guess its hard indicators.

正在翻译，请等待...