“凹缝”的英语可以翻译为：ecessed [concave，hollow] joint，deep seam ...

传统的浆砌勾缝方法主要有三种:凸缝 、 平缝和凹缝.Traditional grouted pointing methods mainly are high joint, bed joint and hollow joint....

“凹缝”的拼音为：āo fèng...