您要查找的是不是:
- Impervious channels can efficiently lower the underground water level in the surrounding zones and control the breeding of oncomelania snail. 不留渗漏隙缝,可以有效降低周边地下水位,抑制钉螺繁衍。
- It was remarkable that epidemic of wheat scab was affected by both the climatic factor and the underground water level and displayed complex geographic patterns. 流行分区受气候和地下水因素制约,呈现比较复杂的地理格局。
- The epidemic zones were differentiated at the township level based on the correlation between the scab severity and underground water level according to regression analysis. 在气候分区的基础上,根据地下水位与发病率的回归关系,进一步以乡镇为单位划分小麦赤霉病流行区。
- Based on the analysis of the data from 414 earthquakes, we get the conclusion that geomagnetism and underground water level observations are the fairly good precursor methods. 遵照“地震监测能力好的前兆手段,在其监测范围内,有震时应有较高的异常比,无震时应有较低的异常比”的原则,我们认为地磁和地下水位是比较好的前兆观测方法。
- In order to stop the downfall of underground water level, the authors suggest that the exploitation and utilization of underground water should be scientifical and ration... 为了控制地下水水位的下降,必须合理开采,科学利用,控制人口的增长,提高重复利用率,节约用水。
- Because of regional underground water level continual dropping and climate changing to aridity, land desertifacation and degeneration of glassland and tundra will tend to worse in short period. 由于区域地下水位的持续下降和气候向干旱化发展,土地沙化、草场退化及多年冻土退化短期内将趋于恶化。
- The underground water exploitation plan will be improved, focusing on reducing the amount of underground water for industrial and agricultural purposes, in an effort to gradually elevate the underground water level. 完善开采地下水计划,重点控制工农业取用地下水的数量,逐步提高地下水水位;
- The underground water exploitation plan will be improved,focusing on reducing the amount of underground water for industrial and agricultural purposes,in an effort to gradually elevate the underground water level. 完善开采地下水计划,重点控制工农业取用地下水的数量,逐步提高地下水水位;
- Composite ground with tamped concrete stake is a new technology developed in recent years for ground reinforcement. It is suitable for the treatment of filling soil, powdered soil or clay, which is above the underground water level. 夯实水泥土桩复合地基是近年来发展起来的新的地基加固技术,适用于处理地下水位以上的填土、粉土及粘性土。
- Because of regional underground water level continual dropping and climate changing to aridity,land desertifacation and degeneration of glassland and tundra will tend to worse in short period. 由于区域地下水位的持续下降和气候向干旱化发展,土地沙化、草场退化及多年冻土退化短期内将趋于恶化。
- The target to conduct the combined apply of river and underground water in Ejin oasis is to reduce the waste of water resources,resume the ecology water level and protect the oasis. 对日趋缺水的额济纳绿洲,进行河水与地下水进行联合运用的目的是:减少水资源浪费,恢复生态水位,保护绿洲。
- The part which is above the underground water level is calculated using the empirical formula,while the part which is below the underground water level is calculated using the Dupuit's equation. 地下水位线以上部分可以用无地下涌水情况下浸出液经验计算公式计算,地下水位线以下部分可以用裘布依公式计算。
- It is the prerequisite for investigating the hydrogeologic environment, hydrodynamic condition and the change in water quantity for the recognition of underground water level's dynamic anomaly. 识别地下水动态异常变化的条件是调查观测井的水文地质环境、水动力条件及水量有无变化。
- Dynamic classification of underground water levels based on the theory of Fuzzy set. 应用Fuzzy集理论对地下水位动态分类。
- The part which is above the underground water level is calculated using the empirical formula, while the part which is below the underground water level is calculated using the Dupuit's equation. 地下水位线以上部分可以用无地下涌水情况下浸出液经验计算公式计算,地下水位线以下部分可以用裘布依公式计算。
- lowering of the underground water level 地下水位降落
- karst cave above underground water level 地下水位以上的岩溶洞穴
- underground water level measurement 地下水位测量
- underground water level observation 地下水位观测
- analysis of underground water level 地下水位分析