【第 1 段建议】: 1. "sand making machin" 应为 "sand making machine" (遗漏字母) 2. "lmpact" 应为 "Impact" (字符错误，'l' 应为 'I') 3. "SMP Crushing Plant" 后无标点，建议添加标点。 4. "High Weir Spiral Classifier" 中有两个空格，应为 "High Weir Spiral Classifier" (多余空格) 5. "Submerged Spiral Classifier" 中有两个空格，应为 "Submerged Spiral Classifier" (多余空格) 6. "lmpact" 应为 "Impact" (字符错误，'l' 应为 'I') 请注意其他的格式问题，如标题的统一性和是否需要空行等。 --- 【第 2 段建议】: 1. "what causes the problem." 应改为 "what causes the problems." 2. "plug in the power cord to open the power supply" 语句不通顺，可以改为 "plug in the power cord and turn on the power supply." 3. "light-shifted wheels" 应改为 "lightly shifted wheels." 4. "the internal capacitance of the motor will be invalid" 语句不通顺，建议改为 "the internal capacitance of the motor may be faulty." 5. "the sound of current" 应改为 "the sound of current flow." 6. "it is caused by the short circuit of the starting capacitor" 可以改为 "it is caused by a short circuit in the starting capacitor." 7. "the spark and noise are weak" 应改为 "if the spark and noise are weak." 8. "The analysis of this problem is mainly carried out from three aspects" 可以改为 "This problem is mainly analyzed from three aspects." 9. "one is power on does not start" 应改为 "one is when powered on, it does not start." 10. "The solution has been analyzed in detail and solved this problem." 可以改为 "The solutions have been analyzed in detail to address this problem." --- 【第 3 段建议】: 1. "WhatsApp" 应该统一格式，例如其中一种方式使用，避免重复。 2. "Materials (brochures, catalogs）" 中的右括号使用错误，应该为英文的右括号 ")"。 3. "Demand(multiple):" 中缺少空格，应为 "Demand (multiple):"。 4. "Messages"、"Facebook"、"Linkedin"、"Youtube"、"Instagram"、"Tiktok" 应该保持一致的大小写格式，"Linkedin" 应为 "LinkedIn" 和 "Youtube" 应为 "YouTube"。 5. "0086-21-58386189" 和 "0086-21-58386176" 中的前导 "0" 应为 "+86" 稍微清晰一点。