sacciform recess

例句：

1. 1. The engineer had to make a series of adjustments to the machine's sacciform recess.
   工程师不得不对机器的盲孔进行一系列调整。
2. 2. The construction crew was working on the installation of a new sacciformrecess in the building.
   建筑工人正在安装大楼中的新盲孔。
3. 3.The material used for the sacciform recess should be durable and resistant to corrosion.
   用于盲孔的材料应具有耐久性和抗腐蚀性。