DJD相关论文
本文从分析国内外激光经纬仪入手,介绍了北京光学仪器厂生产的DJD—1型激光定向经纬仪的原理和特点。
Based on the analysis of ......
Loose bodies are freely floating fragments of cartilage or bone inside the knee joint space. This is commonly seen in as......
