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| 51. | Between Sudbury and Wayland the meadows acquire their greatest breadth, and when covered with water, they form a handsome chain of shallow vernal lakes, resorted to by numerous gulls and ducks. |
| 在萨德伯里和韦兰中间的河段，草场最为宽阔，当它们被水漫过时，便形成一连串美丽的弥漫着春之气息的浅水湖泊，成为大批鸥鹭与野鸭的栖息地。 |
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| 52. | Abstract: According to the observed records of the ice condition at Heihe,Nen-jiang,Jiamusi and Harbin hydrological stations in Heilongjiang Province during past more 30 years,this paper analyzes the general ice regime characteristics and the icejam flood of the rivers in Heilongjiang Province,and computes the extreme thickness values of the running ice occured once during fifty and hundred years respectively.The zonation for ice flood in Heilongjiang Province is given based on the ice regime and ice jam flood of River basins in the provence and,more scientific and more rational criterion for relative engineering design is also proposed. |
| 文摘:根据黑龙江省黑河,嫩江（齐齐哈尔、富拉尔基），佳木斯和哈尔滨四个水文站30多年的冰情观测记录,分析了黑龙江省河流的冰情特点和凌汛灾害,计算了相应河段50年一遇和百年一遇流冰厚度极值.最后对黑龙江省河流冰情 |
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| 53. | The extreme effects of sand mining on local deformation of riverbed and evolution of river stretch in typical river sections such as straight river section, river bend and river fork are experimentally studied in micro-scale loose bed hydraulic model. |
| 摘要采用微尺度动床河工模型试验的方法研究了在顺直、弯道与分汊等典型河道不同部位进行大规模采砂对河床局部变形及对河段变形的极限影响。 |
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| 54. | Also this paper discusses selection and method of river crossing of west-east gas transmitting project concerning dicision of pipeline route， geological and hydrologic conditions in crossing section of Huanghe River， Huaihe River and Yangtze River， and relative factors. |
| 结合西气东输(南至上海)口径天然气长输管道前期工作初步踏勘确定的线路走向及穿跨越主要大型河流:黄河、河、江河段的工程地质、文条件及其它相关因素,对采用穿跨方式的选择及穿越技术和方法,进行了初步讨论。 |
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| 55. | Based on the paleoflood study for the Yangtze, Yellow, Hai and Huai Rivers in China, a comparison is made of the design flood with and without paleoflood data, and the analysis of rationality of design flood with paleofloods is also discussed in this paper. |
| 根据长江、河、河及淮河的部分河段上古洪水研究工作所取得的成果，按水利水电工程实际洪水计算的方法，将有古洪水资料的洪水频率计算成果与无古洪水资料的设计洪水成果相比较，从参数区域协调平衡、同控制面积下设计洪水成果等的合理性检查方面论述加入古洪水资料后其设计洪水成果的合理性 |
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