短語詞組短語brake block holder 閘瓦托heel block holder 吊村座滑車眼板block holder ownership 股份所有權leading block holder 導向滑車眼板block holder Counterbalance 大股東制衡level of block holder ownership 股權集中程度holder block 保持架體upper holder block 上壓塊tool holder block 刀桿架 返回 block holder