At last, the progress trend of lead-free solder is pointed out.
最后指出了无铅焊料的发展趋势。
The progress trend of HVAC system in office buildings is discussed and the advantages of underfloor air distribution system in office buildings is briefly presented.
探讨了办公空间内空调系统的发展趋势，以及地板送风系统在办公空间内应用的优势。
The progress trend of HVAC system in office buildings is discussed and the advantages of underfloor air distribution system in office buildings is briefly presented.
探讨了办公空间内空调系统的发展趋势，以及地板送风系统在办公空间内应用的优势。
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