A method of determining which components a substance contains in analytical chemistry.
Word decomposition
Qualitative explanation: determine the nature of the mistake or crime: determine the composition and nature of the substance and explain it in detail. The second journey to the west: "the king was shocked when he saw its ugliness; Hearing the idiot talking, he became more and more afraid ... After a long time, the king asked,' Elder Pig and Elder Sha, the analytical explanation classifies things, phenomena and concepts and explains their essence and internal relations in detail. Distinguish. The Biography of Han Kong Anguo: "Those who have been handed down from generation to generation will come to Zhang Ba from the east. Twenty-nine articles were analyzed and considered as dozens. And with Zuo Zhuan and as the beginning and end, a total of 102.