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定位三角
| 形
| 定位三角 | |
| tech. | orientation triangle |
| S 形 | |
| met. | swan neck |
| T 形 | |
| wind. | tee |
| V形 | |
| met. | vee |
| X 形 | |
| textile | X-line |
| X形 | |
| hydroel.st. | X-shape |
| Z 形 | |
| textile | zigzag |
| 形 | |
| gen. | form; shape |
| |||
| orientation triangle | |||
| setting cam | |||
|
定位三角 : 12 phrases in 5 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Scientific | 2 |
| Space | 1 |
| Technology | 7 |
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