准平原

Depression in the Bohai Sea City West, Yanshanian geosyncline prospective geological structure in southern areas, showing a northern hilly, foothills, plains, the southern alluvial plain, low-lying land topography.

市域处在渤海凹陷西部、燕山准地槽南部的地质构造区，呈现出北部低山丘陵、山麓平原，中、南部冲积平原、洼地地貌。

These samples were collected along a main street across the urban area and a mountain route from foot to the top. Results demonstrate that the main magnetic minerals in the street dust are magnetite, maghaemite and haematite with some paramagnetic minerals. Plots of Mrs/Ms vs. Bcr/Bc and Xfd % vs. X ARM/SIRM indicate that the main grain size of magnetic minerals in the street dust are pseudo single domain. The results reveal that the Lanzhou city is more polluted in spring than in summer. The main pollution sources are anthropogenic activities （81.9%） and natural dust （18.1%）, especially the former. The spatial distribution of pollution is controlled by the topography and weather conditions.

结果表明，兰州市街道尘埃中磁性矿物含量较高，主要磁性矿物是铁磁矿、磁赤铁矿和赤铁矿，并伴有少量顺磁性矿物；磁性矿物粒度主要是准单畴；市区污染春季较夏季严重，春季高频率的强沙尘暴可能带来了更多的磁性矿物；兰州市污染物的沉积和分布在很大程度上受到气象条件和地形地貌格局的影响，市区每个盆地东端高于其它地区；兰州市污染以人为活动产物为主，人为活动贡献约为81.9％，其中包含交通约22.6％的贡献，自然降尘贡献约为18.1％；特殊的地形和气象条件，使得兰州市区的大气环境容量比平原城市的环境容量小得多，进而导致严重的大气污染。

On the stage of Kongyi Member,the main sedimentary facies are the fluvial fan group and flooding plain,and going with the sedimentary surrounding of minitype limnological fluvial fan—gypsum saline.

研究区的沉积受喜山运动影响，在盆地南区产生拉张裂陷，形成孤立的沉积小盆地，并在这种沉积环境中沉积了孔店组地层，孔一段时期以盆缘冲积扇群、洪泛平原为主，局部伴有小型准盐化湖沼的冲积扇—膏盐湖沉积环境。

The event of collision between Lasha block and Qiangtang block in Cretaceous was too weak to cause the regional tectonic effect, but only produced a little relief topograph and Cretaceous red classic deposit in Central Asia.

拉萨陆块与羌塘陆块白垩纪的碰撞本身表现并不强烈，当然也难以产生区域性的构造影响，只是在准平原化基础上产生一些地形微起伏，出现白垩纪红色碎屑岩沉积。

Combining with the weather situation, the formation of the quasi-stationary North China high and its contribution to the continuous heavy rain process over Jianghuai and Hangjiahu plains are discussed.

用新的曲面拟合法对江淮和杭嘉湖平原一次连续暴雨过程作物理诊断，结合天气形势讨论了准静止华北高压的形成及其对江淮和杭嘉湖平原连续暴雨的贡献。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。