齿石

This paper mainly talks about nano-magnetic material existing in the radula of chiton Acanthochiton rubrolinestus LISCHKE and nano-magnetic material existing in the brain of human being.

本论文分别对红条毛肤石鳖齿舌中的纳米磁性物质及存在于人类大脑中的纳米磁性矿物质进行了研究。

Our country firstly put forward such design principle of Qinghai-Tibet railway engineering as "lower temperature actively, reduce the heat into the subsoil, and assure the heat stability of frozen earth for the quality stability of construction", creatively adopt such corresponding measures of frozen earth construction problem as: for the poor frozen earth developing section, line should avoid as possible;for the geology of ice at high temperature and unstable frozen earth zone, the method of bridge instead of subgrade shall be adopted;in subgradeconstruction, such facilities as heat stick, rubble ventilation subgrade , rubble ventilation berm, ventilation pipe subgrade and laying heat preservation board etc shall be adopted to raise the stability of frozen earth subgrade;during the excavation of bridge, culvert , foundation pit and scouring prevention trough, creatively adopt single-tooth knapper and solve the problem of frozen earth excavation;during the construction of bridge and culvert, durable concrete and three-step maintenance method are adopted to assure the outside and inside beauty of structure.

我国在世界上首次提出"主动降温、减少传入地基土的热量、保证多年冻土的热稳定性，从而保证修筑在上面的工程质量的稳定性"的青藏铁路工程设计原则，创造性地采取了解决冻土施工难题的相应对策：对于不良冻土现象发育地段、线路尽量绕避；对于高温极不稳定冻土区的高含冰量地质，采取"以桥代路"的办法；在路基施工中采用了热棒、片石通风路基、片石通风护道、通风管路基、铺设保温板等多项设施，提高冻土路基的稳定性；在桥涵基坑、挡水埝基槽开挖中，创造性地应用了单齿破碎器，解决了冻土开挖难题；在桥涵工程施工中，采用了耐久性混凝土，采用了三步养生法，保证了结构物内实外美。

Stone, Whether Or Not Roughly Trimmed Or Merely Cut By Sawing Etc.,Readymade Garment and underwear,Building materials and supplies,Refractory Bricks, Blocks And Similar Refractory Ceramic Constructional Goods, Except Those Of Siliceous Fossil Meals Or Similar Siliceous Earths,Hydrometers, Thermometers, Pyrometers, Barometers, Hygrometers And Psychrometers Etc.; Parts And Accessories Thereof,Converters, Ladles, Ingot Molds And Casting Machines Used In Metallurgy Or In Metal Foundries, And Parts Thereof,Lathes For Removing Metal, Including Turning Centers,Machine Tools, Other Than Lathes, For Drilling, Boring, Milling, Threading Or Tapping By Removing Metal,Machine Tools For Deburring, Honing Or Otherwise Finishing Metal Or Cermets By Means Of Grinding, Abrasive Or Polishing Products, Nesoi,Machine Tools For Planing, Shaping, Broaching Etc., Gear Cutting, Gear Finishing Etc., And Other Machine Tools Working By Removing Metal Etc., Nesoi,Pig Iron And Spiegeleisen In Pigs, Blocks Or Other Primary Forms,Iron And Steel 0 Z' W {-~!

主要进口商品：非电热工业或实验室用炉及烘箱〔包括焚烧炉〕，金属铸造用型箱；型模底板；阳模；型模等；其它金属、金属陶瓷、玻璃、矿物、橡胶和塑料模具，实验室、化学、农业、运输等用陶瓷器，碱金属、碱土金属；稀土金属、钪及钇；汞，花岗岩、玄武岩、砂岩等建筑用石，成衣及内衣，建筑材料及供应品，耐火砖、块、瓦及类似耐火陶瓷建材制品〔但硅质化石粉或类似硅土制的除外〕，液体比重计、温度计、气压计、湿度计等及其零附件，金属冶炼及铸造用转炉、浇包、锭模及铸造机及其零件，切削金属的车床〔包括车削中心〕，切削金属的钻床、镗床、铣床、攻丝机床〔车床除外〕，其它金属或金属陶瓷的磨削、研磨、抛光等精加工机床，切削金属的刨床、插床、拉床、切齿机及其他机床，生铁及镜铁，锭、块或其他初级形状，钢铁

Results: The profiles of split trace of 40 bone fossil samples respectively from Stegodon orientalis, Chinese rhinoceros, Cervus and other mammalian fauna were identified, some of them were found blunt and might be rodent bite marks.

结果 经40件东方剑齿象、中国犀、鹿等残骨化石标本断裂痕迹剖面的观测，发现有部分骨化石断裂剖面圆钝，似啮齿动物的咬痕，但大部分骨化石断端剖面呈锥形切削改造，有的双面削刮呈锐利器型，有的存在明显打击或铲刮的"印记"，初步认为属早期人类制作骨器的遗迹。

I have a lot of tartar on my teeth.

我的牙齿上有很多齿石。

Then and there people had worn headgear collapsible and wristlet which were made by crude rock teeth fishbone and shells in the sea. The reason why whey wore these things was not only for being beautiful but also the commemorate for victory.

当时已经有头饰、颈饰和腕饰等，材料有天然美石、兽齿鱼骨和海里的贝壳等，当时佩戴这些饰物，可能不仅是为了装饰，也许还包含着对渔猎胜利的纪念。

The results showed that the Shannon-Wiener and Levins′s niche breadths of Schima khasiana,Lithocarpus hancei,Lindera fruticosa,Salix magnifica and Myrsine semiserrata tree species were 0.772,0.761,0.741,0.659,0.632 and 0.971,0.934,0.843,0.708,0.658 respectively.

结果表明：群落中生态位宽度较大的树种为印度木荷、硬斗石栎、绿叶甘橿、贡山大叶柳、针齿铁子，它们的Shannon-Wiener和Levins生态位宽度分别为0.772，0.761，0.741，0.659，0.632和0.971，0.934，0.843，0.708，0.658。

Study on the Chemical Consitituents of Helianthus Annuus, Vernonia Cumingiana and Eritrichium Rupestre

向日葵，毒根斑鸠菊和石生齿缘草化学成分研究向日葵，毒根斑鸠菊和石生齿缘草化学成分研究

Six arrises than circular pencil work well, circular pencil market is diverted; straight teeth casting ladle than worm casting ladle work well; also are casting ladle is a popular in market.

六棱石墨笔比圆形石墨笔好用一点，就挤占了圆形石墨笔市场；直齿浇包比蜗轮浇包好用，也会遭到浇包市场的欢迎。

Results: The profiles of split trace of 40 bone fossil samples respectively from Stegodon orientalis, Chinese rhinoceros, Cervus and other mammalian fauna were identified, some of them were found blunt and might be rodent bite marks.

结果 经40件东方剑齿象、中国犀、鹿等残骨化石标本断裂痕迹剖面的观测，发现有部分骨化石断裂剖面圆钝，似啮齿动物的咬痕，但大部分骨化石断端剖面呈锥形切削改造，有的双面削刮呈锐利器型，有的存在明显打击或铲刮的&印记&，初步认为属早期人类制作骨器的遗迹。

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。