【第 1 段建议】: 1. "Factors affect the operation and running of vertical roller mill" 应为 "Factors affect the operation and running of vertical roller mills" （单复数错误）。 2. "Vertical Shaft lmpact Crusher" 中的 "lmpact" 应为 "Impact" （拼写错误）。 3. "High Weir Spiral Classifier" 中多了一个空格，应为 "High Weir Spiral Classifier" （多余空格）。 4. "Submerged Spiral Classifier" 中多了一个空格，应为 "Submerged Spiral Classifier" （多余空格）。 --- 【第 2 段建议】: 1. "Factors affect" should be "Factors affecting". 2. "the characteristics of the raw materials mainly refer to hardness, particle size, moisture content and grindability" should include a comma before "and" for clarity: "moisture content, and grindability". 3. "the material hardness is directly related to the product output and the service life of the wear parts of the mill" should be "the material's hardness is directly related to the product output and the service life of the wear parts of the mill". 4. "If the feeding size is too large" should be "If the feed size is too large" for consistency. 5. "the material layer is unstable" should be "the material layer becomes unstable" for better clarity. 6. "the control of moisture content of raw material" should be "the control of the moisture content of the raw material". 7. "the material will stick to the fine powder on the material bed" should be "the material will stick to the fine powders on the material bed" for grammatical agreement in number. --- 【第 3 段建议】: 1. "the amount of raw materials" should be "the amount of raw material" for consistency. 2. "the amount of the finished product" should be "the amount of finished products" for consistency with earlier usage. 3. "the internal and external circulation of the mill reduce" should be "the internal and external circulation of the mill is reduced" for grammatical correctness. --- 【第 4 段建议】: 1. "the product fineness to be unqualified (rough out)" - "rough out" may need clarification or rephrasing. 2. "the number of cycles is less, the grinding time is short" - consider rephrasing for clarity, e.g., "fewer cycles and shorter grinding time." 3. "the power consumption of the mill is increased, and the product fineness is finer" - can be simplified to "the power consumption of the mill increases, resulting in finer product fineness." 4. "Excessive pressure may lead to instability of the material layer, which may cause unnecessary damage to the reducer." - consider rephrasing for clarity, e.g., "Excessive pressure may destabilize the material layer, potentially causing unnecessary damage to the reducer." 5. "leading to the thickening of the material bed" - "thickening" may need rephrasing for clarity, e.g., "increasing the thickness of the material bed." 6. "resulting in over-grinding" - could specify "over-grinding of material." 7. "the powder overflow speed will increase" - could specify "the speed of powder overflow will increase." Note: The text is quite technical. While there's no outright spelling or singular/plural error, some phrases could use simplification or clarification for better readability. --- 【第 5 段建议】: 1. "mill" should be "Mill" in "vertical roller mill" 2. "the vertical roller mill runs for a long time" should be "the vertical roller Mills run for a long time" 3. "roller sleeve" and "grinding disc liner" should be plural (roller sleeves, grinding disc liners) 4. "the production capacity is reduced by more than 10%" should be "the production capacities are reduced by more than 10%" 5. "Get Price More" should be "Get Price & More" 6. "Equipment selection" should be "Equipment selections" in "including equipment selection" 7. "Demand(multiple):" should have a space after "Demand" (Demand (multiple):) 8. "Materials (brochures, catalogs）" should use the correct closing parenthesis (Materials (brochures, catalogs)) 9. "WhatsApp" and "WeChat No." should follow consistent formatting (capitalization style). 10. "Consultation" and "SBM Blog" are not formatted consistently with other headers.