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.
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