corrugated culvertcorrugated-metal pipe culvert波纹管: sylphon bellows; bellows; co ...波纹管: sylphon bellows; bellows; corrugated pipe螺纹管,波纹管: corrugated tube波纹铁管涵: corrugated metal pipe culvrt波纹钢管涵洞: corrugated steel culvert下载手机词典可随时随地查词查翻译