您要查找的是不是：
- low water level system tract 桔水期
- high water level system tract 丰水期
- Three-tank water level system was modeled by using RBF-ARX model. 针对三容水箱液位系统的非线性，采用RBF-ARX模型对三容液位系统进行了离线动态特性建模的研究。
- Small rivers flow, the low water level, exposed the sandbank and large-capacity reservoir are in sharp contrast. 河流流量细少，低矮的水位、裸露的河滩和大容量水库形成鲜明对比。
- The pumps will be stopped automatically in case of electric fault, and low water level in washwater storage chamber. 如果停电和冲洗水贮存池内的水位低，则泵自动停止。
- The reservoir water fluctuation belt is the bank slope area which submerges at the low water level. 水库消涨带是指随水位涨落不时出没的库岸,其坡面裸露,泥沙侵蚀量大,生态环境恶劣。
- For wet-pit installations, it is recommended that the low water level elevation be specified to meet or exceed the minimum submergence to prevent vortexing. 对于湿井设备安装，建议所确定的低水位高度应该达到或超过预防涡流的最小潜水深度。
- The low water level of Yichang Section is a characteristic parameter which reflects the navigation condition of Gezhouba ship locks. 摘要宜昌断面的枯水水位是反映葛洲坝船闸通航条件的特征参数。
- Francis turbine is applicable for the middle and low water level power station,Both have vertical and horizontal structure,and commonly designed in the scroll. 混流式水轮机用于中、低水头电站，有卧式、立式两种，一般采用金属蜗壳。
- Adapt to small aquarium, all kinds ofhandicraft and rockwork.High-class design,low water level,savingenergy and durable.Ingenious shape,safe and super silent. 外形精巧，安全超静。一流设计，超低水位，节能耐用。适合于小型水族缸及各类工艺品、假山配套使用。
- Moreover, there is some difference between high and low water level periods.Generally speaking, the WQI is higher during high water level periods because of dilution. 而主流的高屏大桥与双园大桥测站由于水量较大，WQI平均值保持在50-60之间，显示水质属于中等的情形。
- Combining an application case, whole-set underwater rubber fenders' renew under low water level, was realized under dry construction condition through chemical anchorage of screws. 结合工程实例，在创造干施工环境下，通过化学锚固螺栓的方法，实现了更换低水位以下成套橡胶护舷。
- Other environmentally friendly toilets concentrate on using low water levels, or recycled water. 其它环保卫生间侧重使用低水位或回收水。
- A process of the lowest water level that was infrequent in the Poyang Lake appeared in 2006. 摘要2006年鄱阳湖出现了历史上罕见的长时间水位异常偏低的枯水位过程，本文根据实测资料对其特征进行分析；
- The unit shall be equipped with control logic that shuts down all electricity to the heating elements in the event of no water or low water levels in the tank. 这种热水炉应该配置控制逻辑电路,当出现无水或水位太低状况时,能够自动关闭加热元件的电源。
- Consequently, it is often necessary to close a series of basins by means of sluices and thus maintain a constant water level in the closed port section. In tidal ports, depths are almost always calculated with the lowest low water line as zero line. 因此有必要使用泄水闸来封闭一些港区，以保持封闭港区中的水位。在潮汐式港口，将最低水位计作零水位。
- sediment flushing at low water level 低水位泥沙冲刷
- He was in very low water when I saw him last week. 上星期我见到他时他手头正紧。
- So-called 4th sequence is a system tract practically with no cyclicity. 四级层序就是体系域，不具有旋回性。
- Article 23 For water bodies that are used for fisheries and also serve the purposes of water storage and regulation and irrigation, the departments concerned shall fix the lowest water level required for fishery. 第二十三条 用于渔业并兼有调蓄、灌溉等功能的水体，有关主管部门应当确定渔业生产所需的最低水位线。
