| 1. | Some distance above the lead block a photographic plate is placed .
在铅块上方某一距离处放一照相底板。 |
| 2. | Explosive - determination of power - lead block method
炸药作功能力试验铅铸法 |
| 3. | Analysis of excavation progress control in leading block of fenggang tunnel
凤岗隧洞前段开挖进度控制分析 |
| 4. | Shipbuilding and marine structures ; trunnion pieces for span bearings and lead block bearings ; identical with iso 8314 , edition 1987
造船和海上结构.跨架轴承和导向支承轴承的耳轴件 |
| 5. | The measurement and analysis of output factor of lead block fields for high energy electron beam of varian 2300 c d linear accelerator
直线加速器高能电子束铅挡野输出因子的测定与分析 |
| 6. | It is not only a radiotherapy reform but a practical and effective treatment that the moulding of low - melting - point lead is used to supplement conventional and normal lead block
摘要用低熔点铅合金浇铸的办法补充传统的标准式铅挡，是放射治疗界进行普通放疗的一项改革，也是一种切实有效的治疗方案。 |
