ποτηρι ζεσεως, χημική ουσία, σχέδιο, Επιστημονικός εξοπλισμός, εργαστήριο, πείραμα, έρευνα, Υγρό που αναβλύζει, μέτρηση, επιστήμη, δείγμα
Public Domain
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