| 英文名称: | 31 kinds of metal mixed standard / aluminum, arsenic, gold, boron, barium, beryllium, bismuth, calcium, cadmium, cobalt, chromium, copper, iron, indium, potassium, lithium, magnesium, manganese, molybdenum, sodium, nickel, phosphorus, lead, platinum, antimony, selenium, tin, titanium, vanadium, tungsten, zinc |