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From 6860 to 3170 cal.yr BP,semi-desert steppeexpanded,regional montane forest steppe retreated,suggesting a prolonged warm and dryclimate.Between 3170 and 2340 cal.yr BP,regional forest steppe expanded whereassemi-desert steppe retreated,indicating the climate became cool and wet gradually and thehumidity reached the maximum at the end of this stage.During 2340～1600 cal.yr BP,Poaceae steppe dominated whereas wetland meadow expanded and the montane forest stepperetreated,suggesting a cool and wet climate prevailed,wormwood grass steppe prevailed andthe climatic instability increased after 1600 cal.a BEThe climate and environmental reconstructions by pollen were supported by the diatomrecords.A relative high lake level and moister climate prevailed between 8660 and 7230 cal.yr BP as inferred by the dominance of planktonic diatom genera and high planktonic/benthicratio (〉40).low lake level and dry climate sustained during 7230～2330 cal.yr BP assuggested by the low abundance of planktonic diatom and low planktonic/benthic ratio ～20and the lake returned to high level during 2330～930 cal.yr BP as inferred by there-dominance of the planktonic diatom and the high value of palnktonic/benthic ratio.The pollen-based climate reconstruction was also consolidated by the grain size andPediastrum concentration records.

Ugii Nuur湖周围现代孢粉研究表明：松属为空气传播的外来花粉，其含量变化可能指示了远山森林草原发育状况；禾本科具显著低代表性，母体植物建群时含量通常在10％以下：藜科花粉含量可以指示区域气候干旱程度。2、以现代孢粉研究为基础、可靠AMS~(14)C年代为框架，Ugii Nuur孢粉记录高分辨率地重建了蒙古国中部地区过去8660 cal.yr BP以来的植被和气候变化。8660～7800 cal.yr BP研究区植被为禾草草原，湖畔及河谷低地发育苔草草甸，远山发育松属针叶林和森林草原，气候温和略湿润；其中8350～8250 cal.yr BP湿生草甸扩张，旱生植物成分减少，气候凉湿。7800～6860 cal.yr BP旱生成分增加，气候转向暖干。6860～3170 cal.yrBP半荒漠草原扩张，远山森林草原退缩，山地草原和河谷及湖畔湿生草甸退缩，气候持续暖干。3170～2340 cal.yr BP半荒漠草原退缩，远山森林草原扩张，气候转凉变湿，末期湿度条件达最佳。2340～1600 cal.yr BP禾草草原发育，湖畔及河谷低地湿生草甸扩张，远山森林草原略有退缩，气候总体较凉湿。1600 cal.yr BP以来研究区发育禾草-冷蒿草原，气候波动较大。

A flowsheet consists of three stages of fine grindings,two stages of gravity separations and a screening process was adopted to recover iron from iron-smelting slag ,and reduced iron powder with MFe exceeding 90% can be prepared.

为了有效回收炼铁渣中的铁，对炼铁渣进行三级细磨、二级重选以及一段筛分处理，制得了MFe含量90%以上的还原铁粉，实验表明2 t粉铁可制取出1 t还原铁粉，残渣则可用于制作陶瓷、免烧砖等，实现了资源综合利用。

The powder paving is impact on sintering process and prototyping quality in SLS processing. The process of powder paving with roller is analyzed, and is described with mathematics.

在激光选区烧结过程中，铺粉对烧结成形的顺利进行和烧结成形质量都具有重要的影响，为此，对辊式铺粉过程进行了深入分析，并且用数学方法对铺粉过程进行了描述。

Such leveling method can not ensure resistance equilibrium among the pulverized coal feeding pipings during the boiler actual operation.

电站锅炉制粉系统送粉管道中广泛采用冷态纯空气阻力调平方法，在纯空气条件下的阻力调平不能保证锅炉实际运行时各送粉管道间的阻力平衡。

Cold state pure air resistance leveling method is broadly used in the feeding pipings of utility boilers' pulverized coal preparaption system.Such leveling method can not ensure resistance equilibrium among the pulverized coal feeding pipings during the boiler actual operation.

电站锅炉制粉系统送粉管道中广泛采用冷态纯空气阻力调平方法，在纯空气条件下的阻力调平不能保证锅炉实际运行时各送粉管道间的阻力平衡。

According to different proportion, adding sweet potato flour and black rice flour into wheat flour, through testing of shearing hardness and sensory evaluation of cookie made from food crops like black rice, sweet potato to research how the sweet potato flour and black rice flour influenced the biscuit.

采用不同的配比将红薯粉和黑米粉加入到小麦粉中，以剪切硬度和感官品质为评价指标，研究红薯粉和黑米粉对酥性饼干的影响。

The influences of the parameters of the nozzle and the laser on the welding process and the utilization ratio of the powder are researched during laser welding with powder.

研究了粉束落点相对激光光斑位置变化、送粉与焊接的相对方向对送粉时焊接过程和粉末利用率的影响。

The company Main products: tungsten powder, tungsten carbide powder, cobalt powder; Carbide Rods, rotary burrs, rough milling cutter blade, pipes, plates and other special-shaped products; high-density alloy products; Carbide Milling Welding, T-shaped slot milling cutter, reamer, broach, drill, composite cutting tools, etc.; overall carbide saw blade milling cutter, end mill, slot milling, ball milling, cutting tobacco cutter, reamer, drill, scheduled to handle drilling, etc.; folder, mold, measuring, etc.; Company carbide spiral blades and ultra-fine carbide crystals of high-speed milling product line to fill the gaps in the province, the product is widely used in textile, steel, chemical, mining, machining and electronics industries, and become a Canton Panasonic, Wanbao, FAW, Sanyo, HA 1 workers, the volume of HA, Shanggong and domestic well-known military enterprises and many other brand-name manufacturers to suppliers, the company also self-employed or commission Products agents sold Europe and the United States, Japan, Southeast Asia, Taiwan, Hong Kong and other countries and regions, are users.

公司主要产品：钨粉、碳化钨粉、钴粉；硬质合金圆棒、旋转锉、锯片铣刀毛坯、管、板材及其它异形制品；高密度合金制品；硬质合金焊接铣刀、T形槽铣刀、铰刀、拉刀、麻花钻、复合刀具等；整体硬质合金锯片铣刀、立铣刀、槽铣刀、球铣刀、切烟刀、铰刀、麻花钻、定柄钻等；夹、模、量具等；公司硬质合金螺旋刀片及超细晶体硬质合金高速铣刀产品系列填补了省内空白，产品被广泛应用于轻纺、钢铁、化工、矿山开采、机械加工、电子等行业，并成为广州松下、万宝、一汽、三洋、哈一工、哈量、上工及国内知名军工企业等众多名牌厂家的供应商，公司产品还自营或委托代理商远销欧美、日本、东南亚、台湾、香港等国家和地区，均得到用户的好评。

It is also shown that it is quite possible to extract gold by self-catalysis leaching of thiosulfate from copper-containing ore or concentrate without the addition of copper ions.

在铁粉置换、锌粉置换、活性炭吸附等几种方法中，铁粉置换法从硫代硫酸盐的浸出液中回收金最理想，金、银置换率大于99％，而铜置换率小于20％，置换的最佳pH范围为10～10.5。

in the recent years, on the basis of in-depth study of existing grinding mechanism and the grinding equipment, horomill has been developed the new grinding equipment with the quality and reliability of a ball mill, and compact structure of the vertical mill and low energy consumption roller press.

摘 要：筒辊磨是近年来人们在深入研究粉磨机理和现有的粉磨设备的基础上，开发出来的一种具有球磨机的质量和可靠性、立磨的紧凑结构和辊压机的低能耗的全新结构的新型粉磨设备，它的优势为挤压粉磨找到了一条能充分发挥节能潜力的新途径。

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％。