研究浮动机对一定口径范围内大口径步兵自动武器的通用性，对于通用枪架的设计具有重要意义。
Study of generality of floating machine for a certain range of large caliber infantry automatic weapons is of great importance to the design of general-purpose mount.
喷嘴内腔孔径应和喷嘴出口口径有一定的匹配关系。
Internal diameter nozzle and nozzle exit diameter should to be a certain degree of matching relations.
扫描镜是光机扫描型空间遥感器的重要组成元件。文章针对目前空间遥感器上应用的大口径轻量化扫描镜，从材料和制作方法方面进行了一定的技术研究。
The scan mirror is an very important part of a space remote sensor. This paper discusses the material development and the manufacture method of the big lightened scan mirrors.
介绍钻孔压浆成桩法在第四纪粘土地层大口径斜桩施工中的应用情况，为无砂混凝土斜桩成桩施工提供了一定的方法和经验。
The drilling pressure slurry used in construction of big gauge slant piles is introduced. It provides methods and experience for slant pile of concrete without sand.
经低温介质试验和型号试验使用，证明改进方法有效，可满足型号研制需要，对大口径低温球阀的研制具有一定参考价值。
These methods can meet demands for space model development and provide design and application references to the next generation heavy caliber cryogenic ball valve.
对导致裂纹的主要原因进行了分析，提出了行之有效的解决措施，对小口径螺旋焊管的生产具有一定的指导意义。
To main reason for produced cracks is analyzed and effective solving measure is raised. It has certain direction significance for production of spiral welded pipe with small forming angle.
对导致裂纹的主要原因进行了分析，提出了行之有效的解决措施，对小口径螺旋焊管的生产具有一定的指导意义。
To main reason for produced cracks is analyzed and effective solving measure is raised. It has certain direction significance for production of spiral welded pipe with small forming angle.
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