loose masses 3 [vynechat] sypké hmoty technological processes 2 [vynechat] technologické procesy 2 [vynechat] force 1 [vynechat] materials science 1 [vynechat] mechanika tuhých telies 1 [vynechat] náuka o materiáli 1 [vynechat] pressure 1 [vynechat] sifters (technology) 1 [vynechat] sila 1 [vynechat] solid-state mechanics 1 [vynechat] technology 1 [vynechat] technológia 1 [vynechat] tlak 1 [vynechat] triediče (technika) 1 [vynechat]