“凹口”的英语？

两部分间(如下巴)的裂隙或凹口.A split or indentation between two parts, as of the chin.中间做成凹痕:在 ( 木头 ) 上作槽口 、 凹口或眼, 使其能榫固.To make notches , grooves, or holes in ( wood, for example ) for the purpose of mortising.正确测量凹口直径的方法如图所示.The co...

“凹口”的拼音为：āo kǒu...