【第 1 段建议】: 1. "lmpact"应为"Impact"（字母错误）。 2. "Capacit"应为"Capacity"（拼写错误）。 --- 【第 2 段建议】: 1. "y Of Raymond Mill" - "y" 应为 "Title"。 2. "proper speed Of Main Engine" - "Of" 应为 "of"。 3. "Adjust The Air Pressure And Air Volume Of The Blower Reasonably" - "Reasonably" 应为 "reasonably"。 4. "Reasonable Design Of Shovel Device And Selection Of Wear-Resistant Materials For Grinding Roller And Grinding Ring" - "Of" 应为 "of"。 5. "that can shovel and let the materials between the grinding roller and the grinding ring gets sufficient grinding" - "gets" 应为 "get"。 --- 【第 3 段建议】: 1. "does not have" 应改为 "do not have" 以匹配复数主语 "the grinding ring and roller"。 2. "in time after worn" 应改为 "in time after they are worn" 或 "in time after being worn" 以使句子更通顺。 3. "the gear grinding becomes dull" 句子中的 "the gear grinding" 建议改为 "the gear"。 4. “in The World” 中的 “The” 应改为小写 "the"。 5. "and good daily maintenance, so as to maximize" 建议改为 "and good daily maintenance so as to maximize" 或在 "maintenance" 之后加上 "that"。 6. "WhatsApp" 应改为 "WhatsApp"（无需重复一者）并且句子中应使用一致的小写格式。 7. "Materials (brochures, catalogs）" 的右括号应为英文半角括号 ")"，而非全角。 8. "Demand(multiple):" 中的 "Demand(multiple):" 建议在 "Demand" 和 "(multiple):" 之间加上一个空格。 请对以上问题进行修正。