naval brass是什么意思

用法例句

Used of strong sulphuric acid and strong nitric acid to dissolve sample,tin in Silver-Copper-Zinc-Tin alloy and in copper alloy can be determined by air-acetylene flame atomic absorption spectrophotometry,and the range determined is 0.

用浓硝酸和浓硫酸溶样，以空气—乙炔火焰原子吸收法测定银铜锌锡合金和铜合金中的锡，测定范围为０。