介绍了用于全面钻进的YZX127型液动潜孔锤的结构特点、性能参数、室内岩样实钻试验效果，展望了其广阔的应用前景。
YZX127 hydro hammer used for full face drilling is described with its structural characteristics, performance parameters and laboratory test results as well as the application prospects introduced.
为研究新型板桩潜坝导流功效与局部冲刷问题，进行了针对性的动床模型设计。
A movable bed model test was carried out to study the flow diversion efficiency and local scour of a new-type submerged spur of sheet piles.
推导了动基座潜望式仪器瞄准线稳定时产生的像倾斜公式，分析了像倾斜的特性，得出了几点有意义的结论。
The formulas of image tilt are derived. The characteristics of the image tilt are analyzed. Some reasonable conclusions are drew.
推导了动基座潜望式仪器瞄准线稳定时产生的像倾斜公式，分析了像倾斜的特性，得出了几点有意义的结论。
The formulas of image tilt are derived. The characteristics of the image tilt are analyzed. Some reasonable conclusions are drew.
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