Youtube上的频道如 PTAS: Physics Tomorrow Ambition School


3,390,000 1.13%


2,480,000 4.31%

3,210,000 2.78%

11,600 1.14%


43,200 1.36%

811,000 1.42%

58,800 1.76%

1,840,000 2.66%

171,000 1.49%


144,000 3.55%

487,000 1.57%


355,000 3.21%

296,000 0.99%

1,540,000 2.64%

20,400,000 2.43%

144,000 7.07%


10,500,000 3.02%