工程投影机采购难?NEC厂家直供渠道+验机指南,NEC工程投影机厂家直供与验机指南,轻松解决采购难题
Is it difficult to purchase engineering projectors? NEC factory direct supply channel + Inspection Guide,NEC engineering projector factory direct supply and inspection guide, easily solve procurement problems
以上为机器翻译结果，长、整句建议使用 人工翻译 。