“凹口”造句
2024年06月14日 19:22:45
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 correct method of measuring the indentation diameter, d, is shown in the figure.