Catenary pipe can cross over such barriers as rivulet and deep valley,etc., by fully utilizing pipeline itself strength without other suplementary building.This crossing way is the most simple one.是什么意思_Catenary pipe can cross over such barriers as rivulet and deep valley,etc., by fully utilizing pipeline itself strength without other suplementary building.This crossing way is the most simple one.在線翻譯_英語_讀音_用法_例句