【第 1 段建议】: 1. "lmpact"应为"Impact"（字母 "l" 应为 "I"）。 2. "重要部件"的"Important"需改为小写，即"important"（在标题样式中可能根据语言规范调整）。 3. "Semi-mobile"的半连字符应为"Semi-Mobile"（标题样式中可能根据语言规范调整）。 其他部分无错误。 --- 【第 2 段建议】: 1. "s an Important Part of Raymond Mill" - "s" should be "As". 2. "the coordination of reducer" - should be "the coordination of the reducer". 3. "according to the stipulation" - should be "according to stipulations". 4. "the running-in period is about 200 hours" - should be "the running-in period is about 200 hours," (instead of using a comma there should be a period). 5. "the pre-use period of the decelerator according to" - should be "the pre-use period of the decelerator, according to". 6. "that affect its service life" - should be "that affect their service life" (to match "factors"). 7. "there are overload phenomena in the reducer, such as large defects" - "large defects" should be "defective components" for clarity. 8. "The maintenance of the reducer is not enough, and failure to regularly check the operation of the equipment" - should be "and there is failure to regularly check the operation of the equipment" for grammatical correctness. 9. "Insufficient lubrication management, unreasonable choice of lubricants" - should be "Insufficient lubrication management and unreasonable choice of lubricants" (to maintain parallel structure). 10. "system, safety technology, etc." - should be "system, safety technology, etc." should be changed to "system, and safety technology, etc." for clarity. --- 【第 3 段建议】: 1. "Demand(multiple)" 应该改为 "Demand (multiple)"（在"Demand"和"("之间添加空格）。 2. "Materials (brochures, catalogs）" 中的右括号应该是英文格式，正确为 "Materials (brochures, catalogs)"（将右括号改为英文格式）。 3. "WhatsApp" 在开始时应该有相应的标点，比如在 "WhatsApp" 前添加冒号或破折号（可视语境选择），以保持一致性。 无错误