Compressspecimen between two slabs at a given time under load to determinethe recovery of specimen height after being pressed. Recoveryvalue: Under a specified time, compress a cylinder-shaped specimen ( aheight of 10 mm and a volume of 2 cm3) with 49N compressionforce. Afterwards, remove the force and multiply the differencebetween the specimen recovery height within a given time and the initialheight of specimen by 100.