![headwork造句怎么写]( "headwork造句怎么写")
- TheKashiRivercanalheadworkwasbuiltonthebasisoftheLingongcanal.ThispaperdiscussesexistentproblemofheadworkatYuelaiIrrigationAreainHuachuanCountyandadoptablemeasures.Havingbeeninservicefor123years,theLingongcanalwasreplacedin1967bythiscanalheadworkinfr...
- 21592
中文谷