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| 仪器型号 | 测量锥体直径(mm) | 两测点距离(mm) | 仪器型号 | 测量锥体直径(mm) | 两测点距离(mm) |
| JD322A | Φ26~45 | 15 | JD322B | Φ45~60 | 20 |
| JD323A | Φ60~80 | 25 | JD323B | Φ80~100 | 30 |
| JD323C | Φ100~120 | 35 | JD324A | Φ120~145 | 40 |
| JD324B | Φ145~175 | 50 | JD324C | Φ175~200 | 50 |
| JD325A | Φ200~260 | 60 | JD325B | Φ260~330 | 90 |
| JD325C | Φ340~410 | 130 |
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