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沉积波纹
| 管
| 沉积波纹 | |
| tech. | sedimentary ripple |
| 管 | |
| gen. | supervise |
| cycl. | tube |
| environ. | pipe |
| manag. | reel |
| met. | tubing |
| oil transp. | pipe |
| space | tubing; tube |
| tech. | pipe |
| |||
| sedimentary ripple | |||
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沉积波纹 : 2 phrases in 1 subject |
| Technology | 2 |
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