Hey, if you want me to know these, then I'll ask you --

所有跟帖： 

• Where did the word "laser" come from? -唐宋韵- ♂ (0 bytes) () 12/20/2023 postreply 16:56:18

• light amplification by stimulated emission of radiation. -waterfowl- ♂ (0 bytes) () 12/20/2023 postreply 17:07:09

• You checked, or you memorized? -唐宋韵- ♂ (0 bytes) () 12/21/2023 postreply 09:07:55

• Checked, can't remember any of these. : ) -waterfowl- ♂ (0 bytes) () 12/21/2023 postreply 14:46:14