密西西比河的水位已经比正常水位低6.5英尺。
The water level of the Mississippi River is already 6.5 feet below normal.
当水位高的时候，使用者只需要往下走几个台阶就能到达井的部位；当水位低的时候，就要走好几层了。
When the water level was high, the user needed only to descend a few steps to reach it; when it was low, several levels would have to be negotiated.
由于湖泊水位是由蒸发率和降水量控制的，对这种水位的解释是模糊不清的。
Since lake levels are controlled by rates of evaporation as well as by precipitation, the interpretation of such levels is ambiguous.
闸门关闭，水位上升，下一个闸门开启，再次关闭，水位再次上升，往复这个过程。
Gates close, water rises, gates open; then close, up, open again.
一般情况下，一年的这个时候，水库的水位都会处在正常或高于正常水位线。
In general, reservoirs are at normal or above-normal levels for this time of year.
但含有除草剂的水不能再排向河流，而且我们知道低水位将会对习惯于高水位的河流生态系统造成危害。
But water containing the herbicide cannot be released back into the river and it is known that low water levels can harm river ecosystems accustomed to higher levels.
抵御洪水需要水库保持低水位运行，以容纳洪水的流入，而水库只有保持高水位才能满足发电的需要。
Flood control requires the reservoir maintain low levels of water to allow for the inflow of flood waters, while power generation requires high levels of water in the reservoir.
水库正常运转以后，因为在冬季和2008年春天早期的时候向下游放水，水库水位一直在下降。而汶川地震发生的时候，水库正处在一个低的水位上。
Following normal operation, the reservoir's level dropped as water was released downstream during the winter and early spring 2008 and was at a low level when the Wenchuan earthquake occurred.
如果水箱没有充满正常水量(水箱内侧应该有一条水位线)，慢慢地弯曲一下浮囊阀，看水位会不会上升。
If the tank is not filling all the way (there should be a fill line on the inside of the tank), carefully bend the bulb of the float valve up a bit and see if the tank will fill.
水库正常运转以后，因为在冬季和2008年春 天早期的时候向下游放水，水库水位一直在下降。 而汶川地震发生的时候，水库正处在一个低的水位上。
Following normal operation, the reservoir's level dropped aswater was released downstream during the winter and early spring2008 and was at a low level when the Wenchuan earthquake occurred.
昨天密西西比河洪水到达维克斯堡的水位超出警戒水位14.1英尺，但是并没有损坏主堤，也没有淹没整个城市。
The Mississippi River crested at Vicksburg yesterday at a record high of 14.1 feet above flood stage, but did not breach the main levee or inundate the city.
帕松说：“洪水来的时候将具有某种水位特性，水位要达到某种深度，这将需要一些时间。”
The water will come in with a certain characteristic of this type of level and then build a certain amount of depth at the level, which will take some time, "said Boonpracong."
最终结果是，水位已跌破156米的最佳发电水位。
As a result the levels have fallen below 156 metres - the amount needed for optimum power generation.
45分钟主回路的水位继续下降。控制室中的仪表误报水位在上升。
45 min the water level in the primary loop continues to drop. Gauges in the control room erroneously indicate that the water level is up.
“一些分析员认为水位上升是由于当地在1994年开始增加的降雨量，”Reij补充到，“但这种分析似乎没什么意义，因为在94年以前水位就开始大幅提升了。”
Some analysts attributed the rise in water tables to an increase in rainfall that occurred beginning in 1994, Reij added, "but that doesn't make sense—the water tables began rising well before that."
这幅2010年4月份的图来自最近更新的“地球观察”的专题变化的世界：鲍威尔湖水位，（此系列图文）记录了自1999年以来每年春季该湖水位的变化。
This image from April 2010 is the latest update in the Earth Observatory’s feature World of Change: Water Levels in Lake Powell, which documents changes in lake levels each spring since 1999.
从蒸汽发生器的水位特性出发，对其水位高度控制原理进行了深入细致的研究。
Based on character of water level in steam generator, control principle of height of water level is researched.
机械控制电路实现水位检测、电机驱动、进水、排水等功能，主要由水位检测器、电动机、传动系统部件、进水排水电磁阀组成。
Machine control circuit realizes the functions of water level detect, motor driven, water import and export, it consists of water level detector, motor, transmission system components and penstocks.
其中流量控制回路实现了物模和数模在耦合边界处水位和流量的交换； 水位控制回路实现了入海口潮汐水位的模拟。
The flux control loop realizes the exchange between the water level value and flux value at the coupling boundary, and the water level control loop realizes tidal level simulation.
地下水位动态变化是一个复杂的水文过程，准确地预测地下水位变化情况在水资源开发利用中有着重要意义。
The change of groundwater level dynamics is a complicate hydrological process. It is important to predict exactly the change of groundwater level in exploiting water resources.
当下游水位最低时，尾水管进口真空变化最明显，随着下游水位的上升，尾水管进口真空度逐渐改善。
The vacuum degree at tailrace adit varies most significantly at the lowest downstream water level and improves gradually along with the rising of downstream water level.
护坡覆盖的范围，上游由坝顶护至水库最低水位以下一定距离，一般在最低水位以下2.5米。
Revetments protect the space from dam crest to the line a certain distance, normally 2.5m, under the minimum water level of the dam upstream.
介绍了智能电接点水位计的水位测量原理及其系统的基本结构。
Introduced the water level measurement principle of the intelligent electrical contacted water level indicator and construction of the system.
亚临界压力的汽包锅炉在启动调试时应进行水位标定试验，以确定就地水位表的基准零位。
Water line demarcation test should be carried out when starting up and adjusting the subcritical drum boiler, to certify the zero benchmark of the local water gauge.
坝顶高程由水库静水位加波浪爬高及安全超高决定。坝顶在静水位以上的超高按下式计算。
The dam crest height is determined based on static water level, wave run-up, and freeboard. The freeboard is calculated according to the following formula.
本文把影响地下水位的因素集作为网络的输入向量，地下水位本身作为网络的输出向量，构成了预测地下水位的BP网络模型。
In the paper, a BP network in which the factors to effect groundwater levels are set as input neurons and the groundwater level is set as output neuron, was established to forecast groundwater level.
每天的水流循环达到平衡时，在斗式泵的作用下均衡区水位下降，直到下一次水循环开始时水位将到最低点。
During the balance of the daily flow cycle, the level in the equalization zone will be pumped down by the bucket pumps until the beginning of another flow cycle when it is again at its lowest level.
水位已上升到了警戒水位。
差压式远传水位表应具有压力补偿功能，以保证各种工况下都能显示汽包中真实水位的变化。
Differential pressure remote water gauge should have pressure supplement function to ensure an actual indication of water line in the bubbles under all kinds of working circumstances.
差压式远传水位表应具有压力补偿功能，以保证各种工况下都能显示汽包中真实水位的变化。
Differential pressure remote water gauge should have pressure supplement function to ensure an actual indication of water line in the bubbles under all kinds of working circumstances.
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