请帮忙说明下面英文的具体意思How do you test the nanometers (nm) for PAR20 and PAR38 halogen lamps
问题描述:
请帮忙说明下面英文的具体意思
How do you test the nanometers (nm) for PAR20 and PAR38 halogen lamps
答
怎样检测PAR20和PAR38卤素灯的纳米数?
你原句是不是错了.怎么这么别扭..