短語詞組短語semi -rigidly connected steel frames 半剛性連接鋼框架rigidly connected tandemdisk harrow 剛性聯(lián)結(jié)雙列圓盤耙rigidly connected tandem disk harrow 剛性聯(lián)結(jié)雙列圓盤耙 返回 rigidly connected