【第 2 段建议】: 1. "Chian" 应为 "China"。 2. "pollu" 应为 "pollution"。 --- 【第 3 段建议】: 1. "environment pollution" should be "environmental pollution" 2. "great deal of emission" should be "great deal of emissions" 3. "both the thermal power plant and industrial coal-fired boiler are the two main application fields" should be "both the thermal power plants and industrial coal-fired boilers are the two main application fields" 4. "release and revise of some other related policies" should be "the release and revision of some other related policies" 5. "on environment protection" should be "on environmental protection" 6. "once there is some company trying to discharge pollutants at random" should be "once there is a company trying to discharge pollutants at random" 7. "Technological Verification" should be treated as a section title, should not be followed by a period. 8. "efficient industrial coal powder boiler is the new energy saving technology" should be "the efficient industrial coal powder boiler is the new energy-saving technology" 9. "which supported strongly by China" should be "which is strongly supported by China" 10. "can be cycled as building material" should be "can be recycled as building material" 11. "earthmover is used" should be "an earthmover is used" 12. "sent into the storage bin of production plant" should be "sent into the storage bin of the production plant" 13. "under the coal storage bin" should clarify ownership, such as "under their coal storage bin" 14. "the hot air would enter into the mill, too" should be "the hot air would also enter the mill" 15. "falls on to the cent" should be completed or clarified as it ends abruptly. --- 【第 4 段建议】: 1. "the fringe of grinding plate" -> "the fringe of the grinding plate" 2. "when moving to the grinding roller bed" -> "When moving to the grinding roller bed" (capitalize "When" at the beginning of the sentence) 3. "the bulky coal would be crushed by the grinding roller while the fine coal would form a material bed where fine coal crushes each other." -> "the bulky coal would be crushed by the grinding roller while the fine coal would form a material bed where fine coal crushes one another." (correct usage of "one another") 4. "the crushed material would move toward the fringe of the grinding plate continuously until it is blown away by the strong airflow." -> "the crushed material would move toward the fringe of the grinding plate continuously until it is blown away by a strong airflow." (change "the strong airflow" to "a strong airflow") 5. "The materials in the airflow" -> "The material in the airflow" (maintain consistency in singular/plural usage) 6. "the qualified fine material sent out from mill with the airflow." -> "the qualified fine material is sent out from the mill with the airflow." (add "is" and "the" before "mill") 7. "In light of the characteristics of coal powder, the coal conveying system takes the dense phase transportation by using fluidizing transporter which can help reduce energy." -> "In light of the characteristics of coal powder, the coal conveying system takes the dense-phase transportation by using a fluidizing transporter, which can help reduce energy." (hyphenate "dense phase," add "a" before "fluidizing transporter," and add a comma before "which") 8. "the hot wind system can generate high heat efficiency but low operation costs" -> "the hot wind system can generate high heat efficiency with low operation costs" (change "but" to "with") 9. "Anti-explosive System" -> "Anti-explosion System" (should be "Anti-explosion" instead of "Anti-explosive" for correctness) 10. "Once the content and temperature of CO, O2 is beyond the set value" -> "Once the content and temperature of CO and O2 are beyond the set value" (change "is" to "are" for subject-verb agreement) 11. "the fire extinguishing system works automatically to dilute content and lower temperature." -> "the fire extinguishing system works automatically to dilute the content and lower the temperature." (add "the" before both "content" and "temperature") 12. "if smoke or fire occurs, the system can start to put out the fire." -> "If smoke or fire occurs, the system can start to put out the fire." (capitalize "If" at the beginning of the sentence) 13. "keeping safe operation." -> "keeping safe operations." (plural "operations" for consistency) 14. "The system uses the special anti-explosive sack-duster." -> "The system uses a special anti-explosion sack-duster." (change "anti-explosive" to "anti-explosion" for correctness) 15. "Vertical mill is the ideal mill integrating crushing, drying, grinding, classification and conveying." -> "The vertical mill is the ideal mill integrating crushing, drying, grinding, classification, and conveying." (add "The" before "Vertical mill" and a comma before "and") 16. "the investment costs are reduced greatly." -> "the investment cost is reduced greatly." (change "costs" to "cost" for consistency since "cost" was used earlier) 17. "The roller grinds the materials on the grinding plate directly so the grinding efficiency is quite high while the energy consumption is quite low." -> "The roller grinds the materials on the grinding plate directly, so the grinding efficiency is quite high while the energy consumption is quite low." (add a comma before "so") 18. "and excellent materials used in roller and lining plates extend the life expectancy." -> "and excellent materials used in the roller and lining plates extend the life expectancy." (add "the" before "roller") --- 【第 5 段建议】: 1. "no fly powder" should be "no fly powders" for consistency with the plural form. 2. "the target market of coal powder products presents a tendency of increase by years" should be revised to "presents a tendency to increase year by year." 3. "the short longing time" should be revised to "the short holding time."