| 1 |
00:00 561 |
| 2 |
00:00 873 |
| 3 |
00:00 696 |
| 4 |
00:00 498 |
| 5 |
00:00 744 |
| 6 |
00:00 471 |
| 7 |
00:00 404 |
| 8 |
00:00 367 |
| 9 |
00:00 408 |
| 10 |
00:00 469 |
| 11 |
00:00 467 |
| 12 |
00:00 679 |
| 13 |
00:00 342 |
| 14 |
00:00 400 |
| 15 |
00:00 452 |
| 16 |
00:00 407 |
| 17 |
00:00 397 |
| 18 |
00:00 789 |
| 19 |
00:00 739 |
| 20 |
00:00 579 |
| 21 |
00:00 356 |
| 22 |
00:00 375 |
| 23 |
00:00 434 |
| 24 |
00:00 340 |
| 25 |
00:00 450 |
| 26 |
00:00 300 |
| 27 |
00:00 310 |
| 28 |
00:00 348 |
| 29 |
00:00 323 |
| 30 |
00:00 368 |
| 31 |
00:00 312 |
| 32 |
00:00 439 |
| 33 |
00:00 315 |
| 34 |
00:00 299 |
| 35 |
00:00 711 |
| 36 |
00:00 389 |
| 37 |
00:00 421 |
土的比重试验(比重瓶法)