Christmas Napkin Holder
It is a tool for placing napkins, usually sandwiched between two surfaces.
Carbon dioxide laser chiller effect display
How about carbon dioxide laser chiller? From Youtube.
Fabry–Perot-based phase demodulation of heterodyne light-induced thermoelastic spectroscopy
Fabry–Perot-based phase demodulation of heterodyne light-induced thermoelastic spectroscopy. From phys.org.
Material
Applied in the processing of various kinds of materials
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