유튜브 채널 좋아요 PipingWeldingNonDestructiveExamination-NDT


103,000 1.57%

119,000 2.16%

3,390,000 1.13%

8,810 1.92%

726,000 2.06%

121,000 3.31%

760,000 1.68%

524,000 2.7%

568,000 1.96%

149,000 1.87%

835,000 2.77%

10,500,000 3.02%

351,000 4.64%

86,600 1.3%

1,540,000 2.64%

8,500 2.49%

6,720 2.35%


92,200 2.35%

18,800 1.03%


14,600 1.99%

364,000 3.05%

2,360,000 1.34%