Methods of test for boric acid, boric oxide, diRsodium tetraborates, sodium perborates and crude sodium borates for industrial use-Determination of sodium oxide and boric oxide contents and loss on ignition of $7Idi$7Rsodium tetraborates
工业用硼酸、氧化硼、四硼酸钠、过硼酸钠和粗硼酸钠的试验方法