低水位

The water content and soil nutrient concentration are the highest near the 155-meter height of water level. The vertical distribution of vegetation spatial pattern demonstrates four belts, which respectively include Floodplain annual herb belt, Xanthium sibiricum belt, Paspalum paspaeoides belt and riparian Heights High-grass plants belt.

3受三峡库区蓄水水位变动影响下的的研究区域，表征河流生境变化的水分格局、土壤养分、植被分布均表现为明显的梯度变化，水分、土壤养分在155m附近为最高；植被空间格局呈四个带垂直分布，即从低海拔到高海拔依次为河漫滩一年生草本植物带、苍耳带、双穗雀稗带和河岸高地高草植物带。

Band Equalizer: A super-sensitive three-band EQ system featuring rubberised knobs on each channel enables level control within a –26db to +6db range for fine-tuning high, mid and low bands.

三波段均衡：超灵敏3波段均衡器旋钮橡胶对每个通道，使水位控制在一个- 2 6db到+ 6分贝范围微调高，中和低频段。

The water in the reservoir was so low, that the city was put on short allowance for the time being.

水库里的水位很低，所以市里暂时实行限制用水。

14 Fargo, North Dakota, USA: A rescue airboat moves down a flooded icy road as the Red river continues to rise

法戈：红河的水位在继续上升，遭受了洪水侵蚀的路面由于天气寒冷而变得冰滑，一艘救援汽艇顺着冰滑的路面向低处滑行着。

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。