text: [{"text_idx": "#000000", "text": "How to choose diamond for diamond segment"}, {"text_idx": "#000001", "text": "The control ratio of the metal content in the diamond segment bond"}, {"text_idx": "#000002", "text": "Selection of diamond powder for diamond segment"}, {"text_idx": "#000003", "text": "Arrayed diamond segment and the saw blade"}, {"text_idx": "#000004", "text": "Commonly used bond for diamond segment"}, {"text_idx": "#000005", "text": "Common problems and treatment methods of diamond segment"}, {"text_idx": "#000006", "text": "Formula design of diamond segment"}]