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| 圆弧〔画圆〕规; 特种电影摄像机; 轮转全景照像机〔电影摄影机〕; 涡流式电磁感应试验法; 试片高频感应示波法; 周期图 | |||
| 测定金属硬度的电子仪器 | |||
| 画圆器; 全景照相机; 涡流式合金分检仪 | |||
| 转轮全景照相机 | |||
| 轮转全景照相机; 金属硬度测量仪; 圆弧规; 涡流式感应图示仪 | |||
| cyclograph: 1 phrase in 1 subject |
| Economy | 1 |
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