低水位

From the analysis of the magnetic susceptibility,TOC,TN,pigment,organic car-bon isotope ,HI,saturated hydrocarbon and 14C dating etc. of the sediment samples from coresof two boreholes in the Taihu lake,a knowledge of the evolution of paleoenvironment of thelake during the last 14ka is achieved. The results show that the lake has undergone the fol-lowing stages .. The Lake was at a low level ,or even became exposed during 14.3-13.3kaBP,reflecting an arid climate. There existed a transitional stage during 13.3-12.4kaBP,the climate being slightly warm and wet. There are indications of a cold and dry climate around 11.5kaBP,probably corresponding to the Younger Drays event ,comparable with other areas in east China.

本文根据东西太湖短柱岩芯的沉积物的物理、化学、生物指标的综合分析，讨论了该区距今14ka来的古气候变化过程，结果表明14.3-13.3kaBP，太湖水位低，环境指标甚至表现为暴露特征，反映了气候干旱：13.3-12.4kaBP，为偏暖湿的过渡阶段；该孔柱270-280cm(11.5kaBP左右)各类指标均明显更映冷干特征，可能是Younger Drays事件的记录，与我国东部其它地区有可比性；约10.9-10kaBP，这一时期是整个研究时段内一个较显著的温暖期。

This trip takes you by some of the most stunning and impressive scenery on the island.

在六月去泛舟的另一项好处是水位相对地较低，因此使得这趟旅程成为一个既有趣又安全的经验。

Based on the simulation results, the region and the degree of cavitation occurred in the flow passage of the turbine with a low water level at the outlet of the draft tube are examined, the cavitation performance of the turbine is also evaluated.

根据模拟结果，考察了水轮机在低尾水位下运行时流道内空化发生的部位和程度，并对水轮机的空化性能进行了预估。

As it drops, the point at which it curs the ground surface moves down the valley.

当水位下降时，与地面的交界处将降至山谷低处。

In order to improve the backward method and the low automation level of our countrys factory fish culture, an online multiparameter water quality monitoring system was developed in the dissertation, which can continuously monitor such water quality parameters as temperature, PH, dissolved oxygen and the hight of water on line.

针对我国工厂化养殖水质监测手段落后、自动化水平低的现状，研制了一套适合国情的在线多参数水质监测系统，可对水温、水位、酸碱度、溶解氧含量4个水质参数进行连续在线监测。

In the preceding months changes in land elevation and in ground water levels, widespread reports of peculiar animal behavior, and many foreshocks had led to a lower-level warning.

在此之前的几个月土地海拔和在地面水位的变化，广泛报道特殊的动物行为，许多预兆导致了较低级别

In the preceding months changes in land elevation and in ground water levels, widespread reports of peculiar animal behavior, and many foreshocks had led to a lower-level warning.

在此前几个月里，陆地高度和地下水位的变化、关于动物反常行为的大量报告以及几次前震已经对此作了低级别警报。

Insert long nipple into lower gauge glass tapping in boiler.

将三通长接头插入锅炉上的较低的水位玻璃管。

But how can we create such lake system with much lower ground water table?

但是我们的地下水水位那么低怎么能利用地下水再造出湖泊系统呢？

As the worst drought since 1988 has stressed crops across parts of the Midwest, low-water levels are turning parts of the Mississippi and Ohio rivers into virtual sandbars, causing towboats and barges to run aground and delaying shipments of some agricultural goods.

由于中西部部分地区遭受了1988年以来最严重的干旱，密西西比河和俄亥俄河的部分河段因水位低而正在成为沙洲，致使拖船和驳船搁浅，部分农产品运输延误。

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。