短語詞組短語force -closure grasp 力封閉抓取Bounded force -closure 有界力封閉Force -closure 力封閉fast -acting force-closure seal 速動加壓封閉密封closure force 閉合力Low closure force 低的閉合力closure jacking force 合攏頂推力closure of force polygon 力多邊形閉合 返回 force closure