【第 1 段建议】: 1. "lmpact"应为"Impact"（首字母应为大写，且是一个单词，"l"应为"I"）。 2. "Mill?"应改为"mill?"（将问号后的字母小写，保持一致）。 --- 【第 2 段建议】: 1. "the main grinding machine in the mining field are" - 应为 "the main grinding machines in the mining field are" (主谓一致) 2. "But generally speaking, the efficiency of the ball mill is not high" - 建议删除"But"（句子开头不宜使用连接词） 3. "Raymond mill has the advantages of stable performance" - "Raymond mill" 应该为 "The Raymond mill"（句子起始需要确定冠词） 4. "easily worn parts such as lining plate" - 应为 "easily worn parts such as lining plates" (复数形式) 5. "high dust removal efficiency, low emission concentration" - 建议修正为 "high dust removal efficiency, and low emission concentration"（缺少并列连接词“and”） --- 【第 3 段建议】: 1. "vertical roller mill has been widely used in the production and processing of white non-metallic mineral industry abroad" should be "vertical roller mill has been widely used in the production and processing of the white non-metallic mineral industry abroad". 2. "the working principle of crusher" should be "the working principle of a crusher". 3. "hammer mill is very popular in metallurgy, mining, chemical industry, cement, construction and other industries" should be "hammer mill is very popular in the metallurgy, mining, chemical industry, cement, construction, and other industries". 4. "lower investment cost and more convenient management." should be "lower investment costs and more convenient management." 5. "7 Types of Stone Crusher and How to Choose the Best?" should be "7 Types of Stone Crushers and How to Choose the Best?". 6. "5 Things You Need to Know about Concrete Crusher" should be "5 Things You Need to Know about Concrete Crushers". --- 【第 4 段建议】: 1. 在“Materials (brochures, catalogs）”中，右括号使用了中文格式，应该改为英文格式，改为“Materials (brochures, catalogs)”。 2. 在“Demand(multiple):”中，应该在“Demand”和左括号之间添加一个空格，改为“Demand (multiple):”。 3. 在“Get Solution Online Chat”中缺少句点或其他终止符号。 4. “Back”和“Top”之间缺少连接符号或格式不统一，建议确认统一格式。 5. 将“SBM Blog”与后续内容之间加入适当的分隔符，以增强可读性。 请根据需要进行调整。