【第 1 段建议】: 1. "lmpact" 应为 "Impact"（字母 "l" 应为 "I"）。 2. "High Weir Spiral Classifier" 应去掉多余空格，改为 "High Weir Spiral Classifier"。 3. "Submerged Spiral Classifier" 应去掉多余空格，改为 "Submerged Spiral Classifier"。 4. "Aggregates " 在最后的空格要去掉。 5. "Mining " 在最后的空格要去掉。 6. "Grinding " 在最后的空格要去掉。 7. "Mobile Demand" 可能会更好表达为 "Mobile Demand"（无空格或符号）。 此外，最后一行 "How muc" 是一个不完整的句子，需要添加完整的内容。 --- 【第 2 段建议】: 1. “pollut” 应为 “pollutant” (拼写错误) 2. “An” 应为 “an” (大小写错误) 3. “have” 应为 “has” (主谓不一致) --- 【第 3 段建议】: 1. "Promoting your own equipment is an environmentally-friendly equipment" 应改为 "Promoting your own equipment is environmentally-friendly equipment". 2. "the environmentally-friendly tailings processing ball mill" 应使用复数形式为 "the environmentally-friendly tailings processing ball mills". 3. "and the different models are different in scale" 建议修改为 "and the different models vary in scale"。 4. "you should first tell your own requirements" 建议使用 "you should first state your own requirements"。