【第 1 段建议】: 1. "Vertical Shaft lmpact Crusher" - "lmpact"应为"Impact"（字母"L"应为大写"I"） 2. "SMP Crushing Plant" - 实际上应为"SMP Crushing Plants"以保持与"Modular Crushing Plant"中的复数形式一致。 3. "EPCO" - 可能是一个拼写错误（如果是品牌名或技术名，应确认拼写）。 其余没有发现其他错误。 --- 【第 2 段建议】: 1. "1Stone" -> "1 Stone" (需空格) 2. "Manufactured Sand - What Is It and How to Make It" -> "Manufactured Sand - What Is It and How to Make It?" (句子需问号) 3. "Equipments" -> "Equipment" (应使用不可数名词) 4. "how to avoid operational failures, etc." -> "how to avoid operational failures, etc.?" (句子需问号) 5. "5r new environmentally friendly Raymond mill" -> "5R new environmentally friendly Raymond mill" (应大写) 6. "5r4119" -> "5R4119" (应大写) 7. "5r4121" -> "5R4121" (应大写) 8. "8-78t" -> "8-78 t" (数字和单位之间需要空格) 9. "the pric" -> "the price" (拼写错误) 10. "The site of many sand and gravel plants needs to be continuously converted." -> "The sites of many sand and gravel plants need to be continuously converted." (主谓一致) 11. "the daily operation of Raymond Mill is also true." -> "the daily operation of the Raymond Mill is also true." (需加the) 12. "the new portable crusher plant" -> "The new portable crusher plant" (应大写) 请查收以上问题。 --- 【第 3 段建议】: 1. "e the use of constru" - incomplete sentence or phrase. 2. "as soo" - incomplete word ("soon"). 3. "the sand making machine alloy" - should be "the alloy of the sand making machine". 4. "strai" - incomplete word ("strain"). 5. "vibrating screen equ" - incomplete word ("equipment"). 6. "large-" - sentence is incomplete. 7. "productio" - incomplete word ("production"). 8. "vibrating screen working efficiency" - should be "the working efficiency of vibrating screens". 9. "the fine jaw crusher" - could be made plural if discussing various models (assuming context denotes singular). 10. "for the equipment itself, the materials are mainly filtered by the constant vibration of the " - sentence is incomplete. 请修正上述问题。 --- 【第 4 段建议】: 1. "that have become popular" should be "that has become popular" (subject-verb agreement). 2. "the difficulty of the ultra-fine pulverization and grading technolo" is incomplete; "technolo" should be "technology". 3. "including equipment selection, scheme design, technical support" has an extra space before "technical support" that should be removed. 4. "Demand(multiple):" should have a space after "Demand" (it should be "Demand (multiple):"). 5. "Materials (brochures, catalogs）" should have a correct closing parenthesis (it should be "Materials (brochures, catalogs)"). 6. "Get Solutio" is incomplete; it should be "Get Solution".