のようなYouTubeチャンネル American Concrete Institute



26,700 2.04%

3,390,000 1.13%

19,200 1.39%




48,100 2.14%

80,900 3.45%


128,000 1.58%

66,500 3.49%

11,500 7.09%

5,620 0.64%


760,000 1.68%

151,000 1.64%

21,400 1.73%

2,070,000 2.26%

524,000 2.7%

9,380 1.13%

209,000 2.29%

3,210,000 2.78%

10,500,000 3.02%