Image:Submarine cable cross-section.png
维基百科，自由的百科全书
Submarine_cable_cross-section.png (500 × 419 画素, 档案大小： 74 KB, MIME type: image/png)
| Description |
Cross-section diagram of a submarine communications cable |
|---|---|
| Source |
http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=4278835 |
| Date |
December 14, 1978 |
| Author | |
| Permission |
United States patent illustration - Public Domain |
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