【第 1 段建议】: 1. "lmpact"应为"Impact"（大写字母'I'）。 2. "High Weir Spiral Classifier"中的两个空格应为一个。 3. "Submerged Spiral Classifier"中的两个空格应为一个。 4. "Aggregates Belt Conveyor"中的两个空格应为一个。 --- 【第 2 段建议】: 1. "ond mill?" 应为 "Raymond mill?" 2. “as we all know, whether the Raymond mill can run smoothly or not” 可以改为 "As we all know, whether the Raymond mill can run smoothly or not," 以用逗号结尾。 3. "It should be noticed that when adding lubricants, the quantity must be well controlled, don't add too much to avoid waste," 应将逗号替换为分号或句号，改为 "It should be noticed that when adding lubricants, the quantity must be well controlled; don't add too much to avoid waste,"。 4. "neither can too little be added to avoid affecting the lubricity of bearings." 此句应改为 "nor can too little be added to avoid affecting the lubricity of bearings."。 5. “in order to prevent the deterioration reaction of lubricating oil” 中的“reaction”应改为“reactions”以符合上下文中的复数用法。