低水位

Introduction was given to the principle of auto-control system for constant filtration velocity and constant water level in No.

介绍了东莞第三水厂恒滤速、恒水位过滤自控系统的原理，探讨了水位控制精度低的原因及改进方法。

"Water seeks its level," continued Mr. Gann.You can force it higher with a pump, but when you stop pumping it requires no force to cause it to return to its former level.

"水往低处流"，江恩先生接着说道：你可以强行用抽水泵使它到更高的水位，但是当你停止泵水时，不需要任何外力施加给它因为他要返回到它从前的水位去。

You can force it higher with a pump, but when you stop pumping it requires no force to cause it to return to its former level.

"水往低处流"，江恩先生接着说道：你可以强行用抽水泵使它到更高的水位，但是当你停止泵水时，不需要任何外力施加给它因为他要返回到它从前的水位去

A low-low pressurizer稳压器water level signal deenergizesall heater before they are uncovered to prevent heater damage.

在水位底发生之前，一个低的低稳压器水位信号断开所有加热器，以阻止加热器受损。

Because the water level self-recording device at Dajiangkou hydrological stations of Wusijiang in Guangxi could not run normally for a long time, a low-cost and simple water level information transmission device, cable-transmission water gauge was developed.

为解决广西武思江大江口水文站水位自记台长时间不能自记的问题，研制了一种低成本的简易水位传导装置——索传水位计。

Bottles with ullage between five and seven centimeters are not uncommon for wines forty years and older and often provide thrilling drinking,but the lower the fill,the higher the risk,so consideration should be given.

勃艮第酒的酒龄为四十年或以上，水位与木塞有五至七公分之距离是甚普通，而且引用绝对无问题，不过当然水位越低，风险越高，最好要加考虑。

The number of grey heron Ardea cinerea L. was lower in 1990-1991 when water level was normal and birds had not bred yet than in 2000-2001 when water level was low at the reservoir and the breeding colony has existed.

与水库水位低、繁殖群已经形成的2000-2001年相比，苍鹭的种群数量在水位正常、尚未繁殖的1990-1991年相对较低。

More natatores were found in ponds before drawdown when the water level was high. In contrast, more grallatores were recorded in ponds after drawdown when the water level was low. Waterbird species number and individual density in ponds were higher during drawdown than those before and after drawdown.

养殖塘在放水前水位较高时吸引更多游禽栖息，而在放水后水位较低时吸引更多涉禽；在放水过程中，养殖塘中水鸟的种类最多，密度最大。

During the low-water season, as many as 5,000 people in Chong Kneas live on the lake on tethered houseboats, without access to electricity or sanitation.

在低-水位季节期间，整整的5000人口在冲Kneas生活在湖上用绳子固定居住船，没有连接电或下水道卫生设备。

During the low-water season, as many as 5,000 people in Chong Kneas live on the lake on tethered houseboats, without access to electricity or sanitation.

当低水位季节，多达5000人在冲Kneas生活在湖上用绳栓紧居住船，没有接通电力或卫生设备。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。