查询词典 dune

The results show that: comparing the contrast community(formed by enclosure management for restoring vegetation naturaly on sand-dune for 7 years),some positive aspects of the artificial communities were showed as follows: 1 The level of the species diversity was more higher;2the vertical structure was so complicated that the surface of sand-dune was covered by multiple layers of plants;3 t...

结果表明：1利用植物再生沙障治理流动沙丘可以形成具有多物种、多层片、多层次垂直结构的沙障群落，其水平结构呈网格状沙障结构与障间小群落在空间上镶嵌互补，均衡分布的格局，具有很好的防风固沙和植被恢复效果；2再生沙障建植后第5年开始，沙障群落进入了衰退时期，适时采取科学的经营管理措施对于维持沙障群落的稳定，保障其效益的长期发挥是非常重要的。

The sand dune landscape was not caused by tectonic movement,but by wind and different erosion,and the peat layers were formed in limnological environment in the wind-accumulating dune area.

该区沙山地貌并非新构造运动所致，属差异侵蚀作用的结果，泥炭层由风积地区沙丘间湖沼沉积形成。

Results showed that total vegetation coverage, herbaceous coverage, and species richness were all decreased, and perennial species gradually gave place to psammophyte annuals, shrubs, and semi-shrubs from gentle slope hilly ridge, through saline bottomland and fixed and semi-fixed dune, and to shifting and semi-shifting dune.

结果表明，从缓坡丘陵梁地，经盐化丘间低地、固定半固定沙地到流动半流动沙丘，植被总盖度、草本植物盖度、物种丰富度均呈下降趋势；植被组成中多年生草本植物逐渐减少，一年生草本植物及沙生灌木、半灌木逐渐增加。

The results from the verification and analysis of dune moisture simulated data showed that the precision of root uptake rate was higher,and it was able to indicate the regularity of water uptake during the rainless period,the predicted moisture distribution curve in the dune profile during Nitraria tangutorum growth season by the use of mathematical model was basically consistent with the measured one.

沙丘水分动态模拟结果的验证与分析表明：根系吸水率精度较高，能较正确反映无雨时段根系吸水规律；用所建数学模型预测的白刺生长期沙丘剖面含水量与实测值分布曲线拟合较好。

Twelfth hole, 200 yards; The equal to the more famed seventeenth hole, this one shotter plays from dune top to dune top and was a favorite of Hackett's.

第十二洞，200码，在平等的更著名的17洞，这一个 shotter 次从沙丘顶部沙丘顶部，是一个最喜欢的哈克特的。

The results showed that the flow reattachment distance in the lee side of various dune models are ranged from 4.8H to 10.8H depending on different stoss slopes, the maximum of flow reattachment distance was found in the lee side of the transverse dune with a 15° stoss slope angle.

实验结果表明，当来流风速垂直于沙丘脊线时，沙丘背风侧的气流重附距离介于4.8H～10.8H之间，最大重附距离出现在迎风坡坡度为15 的沙丘背风侧；沙丘迎风坡坡度是控制背风侧气流重附距离的主要因素，而自由风速对气流重附距离的控制作用较小。

Approximately 30,000 years ago, long on stable sand dune plant root, passes through the long time the decency, has formed the limestone, after the plant dies, the sand dune unceasing migration, causes these calcifications the limestone to reveal the surface, has formed the stalagmite which the present sees.

大约在3万年前，长在稳定的沙丘上的植物根部，经过长时间的风化，形成了石灰岩，植物死后，沙丘的不断移动，使这些钙化的石灰岩露出地表，形成了现在所看到的石笋。

Velocity speeding\|up on the windward flanks of barchans is a dynamic factor which control dune formation and dune shape.

迎风坡气流加速是决定新月形沙丘发育和形态的动力因子，研究这一加速过程的定量关系有利于认识沙丘的发育、沙丘的形态、沙丘的运动等。

The new Polo Dune combines the distinctive style of a 4x4 with all the virtues of a supermini. With its rugged bumpers and raised suspension, the Dune looks ready to take you anywhere.

新POLO Dune结合了所有4X4supermini的优点和风格，通过它那螺旋型的缓冲和升高的悬挂系统，Dune看起来已经准备好带你去任何地方。

In the fixed sand dune and half fixed sand dune in shallow groundwater, there are four districts among the soil from the underground watertable to the soil surface.

地下水埋深较大的固定半固定沙丘土壤含水量的总体变化趋势是由上到下逐渐增大。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥