不等厚拱壩 variable thickness arch: 變厚度拱variable-thickness arch: 變厚度拱variable center arch dam: 變中心拱壩variable radius arch dam: 變半徑拱壩variable-radius arch dam: 變半徑拱壩下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯