【第 1 段建议】: 1. "system" should be "systems" in "What are the major system". 2. "lmpact" should be "Impact" in "Vertical Shaft lmpact Crusher". 3. The list formatting could be improved for consistency in bullet points or numbering, but there are no outright punctuation errors. --- 【第 2 段建议】: 1. "The function of the feeding system of mobile crusher" → "The function of the feeding system of the mobile crusher" 2. "to slow down the impact of feeding process on the crusher" → "to slow down the impact of the feeding process on the crusher" 3. "the core of the entire mobile crushing production" → "the core of the entire mobile crushing production system" 4. "with small particle to ensure" → "with small particles to ensure" 5. "to the ability and efficiency of crusher." → "to the ability and efficiency of the crusher." 6. "the requirements of aggregates particle size sorting" → "the requirements of aggregate particle size sorting" 7. "for the concrete blocks with larger particle sizes (that cannot meet the requirements after primary crushing) are screened" → "the concrete blocks with larger particle sizes (that cannot meet the requirements after primary crushing) are screened" 8. "can sort the crushed construction waste according to the particle." → "can sort the crushed construction waste according to the particle size." 9. "good possibility" → "good stability" --- 【第 3 段建议】: 1. 在序号1的段落中，"reduces" 应为 "reduce"（动词形式应与主语一致）。 2. 在序号2的段落中，"the width of the vehicle body is smaller than that of the operating semi-trailer" 中的 "semi-trailer" 需要改为 "semi-trailers"（为了保持一致性和正确的复数形式）。 3. 在序号4的段落中，"to meet the user's needs of mobile crushing, mobile screening and other requirements" 中的 "requirements" 需要改为 "needs" （保持并列结构的一致性）。 4. 在最后一段中，存在不完整的句子 "The diesel generator in the integrated unit c"。 --- 【第 4 段建议】: 1. "onfiguration" 应为 "configuration" 2. "WhatsApp" 需要统一格式，第二次出现时应为 "WhatsApp" (首字母大写) 3. "Demand(multiple)" 应为 "Demand (multiple)" (加空格) 4. "Materials (brochures, catalogs）" 中的右括号应为英文符号，改为 "Materials (brochures, catalogs)" (右括号改为英文右括号) 5. "SBM Blog" 和 "Stone Crusher In Ethiopia" 之间需要加标点。 6. "Stone Crusher In Ethiopia" 中 "In" 应更改为小写 "in" 以保持一致性。