1 sentence

1. 技工利用超声波技术来检测金属管道的裂缝。

   jì​gōng lì​yòng chāo​shēng​bō jì​shù lái jiǎn​cè jīn​shǔ guǎn​dào de liè​fèng.

   The technician used ultrasonic technology to detect cracks in the metal pipes.

   Source: Dong Chinese Dictionary