求助一句话? 原帖由 ythwgh8 于 2008-8-21 15:58 发表 at the cartridge top, the feed gas enters the central internal pipe and is conveyed to the tube side of the 2nd interchanger, located in the centre of the second bed , where it is heated up by cooling the product gas that leaves the second bed. ... 标红句是插入语,去掉再看整句话就很明白了,where引导的非限定性定语修饰 the tube side of the 2nd interchanger,2楼翻译的很好: at the cartridge top, the feed gas enters the central internal pipe and is conveyed to the tube side of the 2nd interchanger,where it is heated up by cooling the product gas that leaves the second bed. 查看更多