【第 1 段建议】: 1. "lmpact" 应为 "Impact" (应为大写字母I) 2. “Weir”前应有空格，改为“High Weir Spiral Classifier” 3. “Submerged Spiral Classifier”前应有空格，改为“Submerged Spiral Classifier” 4. “Aggregates Belt Conveyor”前应有空格，改为“Aggregates Belt Conveyor” --- 【第 2 段建议】: 1. "the share of Raymond mills in domestic grinding equipment" - "Raymond mills" should be singular since it refers to the equipment type collectively. 2. "the sealing of powder locker" - "powder locker" should be plural "powder lockers" to match the context. 3. "the analyzer is used to analyze the size of the finished powder" - redundant use of "analyze"; consider revising for clarity. 4. "the final products size" - should be "the final products' size" to indicate possession. 5. "is because that there is gap" - should be "is because there is a gap." 6. "the outer edge of material layer and the outer edge of grinding disc" - "material layer" should be plural "material layers." 7. "5 frequent problems of Raymond mill" - should be "5 frequent problems of the Raymond mill" for clarity. 8. "Excessive Vibration Of Fan" - should be "Excessive Vibration of the Fan" for consistency in capitalization. Overall, a few plurals and possessive forms need clarification or corrections in terms of grammar. --- 【第 3 段建议】: 1. "Tips For Maintenance Of Raymond Mill" - "For" should be lowercase: "Tips for Maintenance of Raymond Mill". 2. "Equipment selection, scheme design, technical support," - There should be no space before "technical": "equipment selection, scheme design, technical support,". 3. "Demand(multiple):" - There should be a space before the parenthesis: "Demand (multiple):". 4. "Materials (brochures, catalogs）" - The closing parenthesis should be a standard round parenthesis: "Materials (brochures, catalogs)". 5. "Basalt Stone Crushing Machine" - Consider maintaining consistent capitalization as "Basalt Stone Crushing Machine" should be checked against the document context for consistency. --- 【第 4 段建议】: 1. "WhatsApp" 应为 "WhatsApp:"（加上冒号）。 2. "Copyright © 2026" 应为 "Copyright © 2023"（年份应为当前年份）。 3. "Tiktok" 应为 "TikTok"（拼写错误，首字母T应大写，k字母须大写）。 4. "function(w,d,s,l,i)" 之后的函数代码缺少结束分号。