base piranhaの例文

• For substrates with low tolerance for acidity, the alkaline oxidising solution known as base piranha is preferred.
• :: Can the sulfide tarnish be chemically oxidised to silver oxide, with something like mild base piranha solution ( NH 4 OH, H 2 O 2 ) aq ? talk ) 09 : 17, 18 March 2013 ( UTC)