zhè / zhǒng / líng / jiàn / xū / yào / jīng / guò / diǎn / hàn / cái / néng / bǎo / chí / jié / gòu / láo / gù

这种零件需要经过点焊，才能保持结构牢固。

This part must undergo spot welding to keep its structure strong.