File:Railwaydoublediscsignal.png
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Railwaydoublediscsignal.png (318 × 408 pixels, file size: 24 KB, MIME type: image/png)
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Summary[edit]
| Description |
中文：铁路双盘信号机，19世纪40年代出现，双盘绕木制或钢制信号杆旋转，但由于识别度不够明显，很快被淘汰。 |
| Date | |
| Source | Own work |
| Author | Charlie fong |
Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:40, 13 June 2020 | | 318 × 408 (24 KB) | Charlie fong (talk | contribs) | Uploaded own work with UploadWizard |
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