查询词典 dune

A lone plant juts defiantly from the arid sand of a dune in this evocative image.

一棵孤立的植物突出挑战从干燥的沙丘在这幅唤起记忆的图片。

Secondly the relation of seeding time, average sand dune height , s...

适宜的播区立地条件为沙丘平均高度为10m以下，沙丘密度低于75%，播前自然植被覆盖率为12-25%。

From left: blocks of icy debris, warmed by the sun, tumble down cliffs of the northern ice cap; swirling dust devils leave tracks on defrosting dune surfaces in the south; as polar ice recedes, the surface erodes in scalloped ridges; during spring in the north, sand dunes emerge from the blanket of frost; starburst patterns are created as ice warms into gas and expands, creating channels spreading out radially; when the gas breaks through the ice, it creates plumes and material is carried downwind.

从左侧起依次是：冰碎块，由于被太阳加热，从北部冰帽的悬崖上滚落；漩涡状尘暴在南部解冻的沙丘表面留下的轨迹；消退过程中，极冰在地面侵蚀出圆齿状脊；在北部的春季，沙丘钻出&霜毯&；星暴图案是在冰融化成气体并不断扩散时形成的，在此过程中形成的沟槽呈放射状向外伸展；冰从固态变成气态时产生的气羽流顺风飘散。

There are a number of amphiboles developed in metamorphic rocks in sands, and the oxygen isotope compositions of quartz in dune sands and similar to that of metamorphic quartz.

沙物质和岩浆岩在所含角闪石种类以及普通角闪石化学成分上的差异性明显大于相似性，说明后者为前者提供的角闪石有限。

Barchan ; windward flank ; wind speed\|up simulation ; dune shape

新月形沙丘；迎风坡；加速模拟；沙丘形态

Field measurement of surface wind velocity and sediment transport rates was made on barchan dune in Wulanbuhe desert to understand. The results show that the wind velocities increasing upon windward slopes of the dunes vary with both slope morphology and wind velocity at the foot of the dunes.

对乌兰布和沙漠新月形沙丘表面风速的野外观测结果表明，沙丘迎风坡气流加速量主要和沙丘坡面形态、迎风坡前来流风速有关，迎风坡风速放大率介于1.02~1.59之间。

More than 200 national and other pavilions will straddle the city's Huangpu River, turning a two-square-mile site into an architectural playground: Switzerland will be represented by a building shaped like a map of that country, complete with a rooftop chairlift, while England is in the celebrated hands of the designer Thomas Heatherwick, who is fashioning what looks like a big, hairy marshmallow. Other attention grabbers include Macao, taking the form of a walk-through bunny, and the United Arab Emirates, which hired Foster + Partners to build a "sand dune."

从5月1日至10月31日期间，上海黄浦江两岸将矗立起200多个国家和地区的展馆，届时游客将可在2平方英里的展区内欣赏各式建筑：瑞士馆的外观似其国家地图，馆内设有屋顶观光缆车；英国馆的设计出自著名设计师托马斯，外观时尚，貌似一株巨型、粗壮的蘑菇；同样吸引眼球的还有澳门馆&玉兔宫灯&外形、由世界闻名的建筑公司福斯特伙伴公司（Foster + Partners）设计的阿联酋馆&天然沙丘&造型。

Dune reed and swamp reed are two main reed ecotypes. Great difference exists between them in the resistance to environment conditions.

这些在长期稳定的自然条件下变异形成的生态型是我们研究植物抗逆机理的理想实验体系。

The results showed the seeds of ephemerals mainly distributes in 0～5 cm soil and there are few seeds under the 5 cm soil.The density of the seed banks is different among the different parts of the sand dune.The density decreases gradually from the foot to the top.

结果表明：短命植物种子主要集中分布于地表0～5 cm土壤中，5 cm以下土壤中极少存在有活力的种子；沙丘间及沙丘不同部位的种子库密度大小不同，密度自坡底随高度增加逐渐减少，坡底、坡中部及坡顶部密度分别为124粒/m2、91粒/m2、66粒/m2。

The density of the foot 、middle part and top are 124grain /m~2、91 grain /m~2、66 grain /m~2,the seeds is more little windward than the leeward.The density of seed banks in windward is 81grain/m~2 and the leeward density is 100grain/m~2.The seed of ephemerals bourgeoning reaches the pinnacle on April and May.The diversity of different parts sand dune is different,but the differences do not reach the marked level.The similarity is high between the seed banks and the vegetation.

迎风坡种子库密度比背风坡面少，迎风坡种子库平均密度为81粒/m2，而背风坡种子库平均密度为100粒/m2；短命植物种子在4月上旬达到萌发高峰，沙丘不同部位物种多样性存在差异，土壤种子库和地上植被存在较高的相似性，此外短命植物在沙丘不同部位的分布存在较高的空间异质性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了