英文翻译的问题,只有一句话：market by end-use sector end—use

英文翻译的问题,只有一句话：market by end-use sector end—use 请教use by end是“有效期至”的意思吗? 英语翻译Use,by you or one client,in a single end product which e use—by 英语翻译END USE CERTIFICATEfor presentation to the Export Contro by the end,on the end ,at the end ,in the end 的区别 by the end, in the end , to the end & at the end 的区别与用法 use by By the end 和In the end 的区别详细 in the high end of the market 的英文是? in the end,at the end of ,by the end of的区别 说主要的, at the end of in the end by the end of的区别