The results indicate that : 1. the main physical and chemical characteristics vary regularly : with rising of the altitude, there is a transition from silt > sand > clay to sand > silt > clay in the mechanical composition ; the argic horizon emerges below the altitude of 1600 meters ; the content of organic matter is enrichment, the content of organic carbon of epipedon is higher than 20 g / kg, while the content of organic carbon increases with increasing of altitude, and in the altitude of 3500 - 3700meters, the soils under the meadow have the maximum content organic carbon ; the soils appear acid - slightly acid reaction, the ph decreases appreciably and acid strengthen with increasing of altitude ; the soils higher than the altitude of 2500 meters are base unsaturated, indicating the soil leaching is strong, the ph and bs are distinct plus correlated ; the contents of sio2, al2o3, and fe2o3 of the soil body and clay are all relatively stabilization ; in the soil body, the content of sio2 is much high and cao is very little, the total contents of sio2, a12o3 and fe2o3 occupy 92 % of the mineral parts, the sequence of mineral elements is : sio2 > al2o3 > fe2o3 > k2o > mgo > cao > tio2 > mno
研究結果表明: 1太白山南坡土壤的主要理化性質隨
海拔高度的上升呈有規律的變化:隨
海拔高度上升,機械組成由粉粒砂粒粘粒逐漸過渡到砂粒粉粒粘粒,
海拔1600m以下出現粘化層;土壤有機質豐富,表層有機碳含量一般在20g kg以上,有機碳含量隨
海拔高度升高而相應增加,
海拔3500 3700m的灌叢草甸植被下有機碳含量最高;土壤呈酸性或微酸性,並隨
海拔上升, ph值略微降低,酸性增強,
海拔2700m以上的土壤多呈鹽基不飽和狀態,表明土壤淋溶作用較強, ph值和鹽基飽和度呈極顯著正相關;土體與粘粒中的sio _ 2 、 al _ 2o _ 3 、 fe _ 2o _ 3含量相對
比較穩定,土體中sio _ 2含量較高, cao含量較少, sio _ 2 、 al _ 2o _ 3和fe _ 2o _ 3含量之和約占土壤礦質部分的92 ,礦質元素含量的順序依次為: sio _ 2 al _ 2o _ 3 fe _ 2o _ 3 k _ 2o mgo cao tio _ 2 mno 。
In this paper, using the program ( epagpll ), the bored testing pile group of the chinese architecture science and research institute at luokou area are analysised. the comparisons among analytical results of four constitutive models of soil are made, and the deformation of piles and soil, the soil resistance of the piles, the friction beneath cap, the aclinic displacement of the ground soil before piles and the failure pattern of pile group are discussed in detail
本文利用所編的程序,對上
海地區豎向荷載作用下的單樁的流變效應進行了分析,並通過樁體位移?時間關系曲線,確定軟土地基上豎直受力樁的承載力,分析了豎直受力樁的最終沉降量的大小,並結合《上
海地區地基基礎》地方規范就程序計算結果進行了對
比。
Before our crew takes off here from hickam air force base and heads to whidbey island naval air station, we wanted to give you an opportunity to hear a few words from mission commander, lt. shane osborn
在我們的機組人員從希卡姆空軍基地動身飛往惠德
比島
海軍航空站之前,我願意讓你們有機會聽到使命指揮官沙恩?奧斯本上尉的話。
Even though we re two different commands - - one in naval air station misawa japan and one out of nas whidbey, we definitely operated as one unit, and america should be very proud of these 23 airmen. they did a great job
盡管我們是兩個不同的指揮部一個是日本三澤的
海軍航空站,一個是惠德
比海軍航空站,但我們的行動絕對是一體化的,美國應該為這23位機組人員感到非常驕傲。
Steve heighway ' s side beat west bromwich albion 2 - 1 in their third round tie recently
史蒂夫?
海威的球隊在第三輪的
比賽中剛剛以2 - 1擊敗了西部羅姆維奇。
Different molecular weight igy exitence in the purified igy suggested that the igy is uniform. through colligate comparison, the best method suit for industrialization is eliminating lipid by 0. 07 % alginic acid sodium combined with ammonium sulfate salting out afterl0 - fold diluted with ph5. 0 water
通過綜合
比較,認為酸性條件下10倍去離子水稀釋卵黃液,離心後上清用0 . 07的
海藻酸鈉去脂,再用硫酸銨鹽析提取純化igy的工藝流程適用於工業化的規模生產。
Cryptic species have been found in a wide range of marine organisms ; with majority of them are benthic invertebrates. in contrast, marine holoplanktons are thought to have lower diversity and slow speciation due to their strong dispersal potential. this paper reviewed studies on cryptic species and speciation in marine holoplankton. based on findings in 38 studied taxa, it was concluded that : 1 ) cryptic species are pervasive in marine holoplankton, suggesting holoplankton speciation was more active than previously thought ; 2 ) current morphospecies diversity is untenable to reflect true species diversity in marine holoplankton ; 3 ) geographic isolation may facilitate cryptic speciation of marine holoplankton. however, contribution of allopatric speciation is still questionable ; 4 ) ecological speciation may be the prevailing speciation mode in marine holoplankton. cryptic speciation in marine holoplankton is paradoxical, because rapid speciation under strong gene flow is countertuitive. solution of this paradox will help us gain deep insights of marine speciation and biodivesity
隱種廣泛存在於各類
海洋生物中,尤其是底棲無脊椎動物.然而,
海洋終生浮游生物由於具有較強的擴散能力,往往被視為生物多樣性低、物種形成慢.本文就
海洋終生浮游生物隱種與物種形成的研究作一綜述.基於研究的38個種類,結果表明: 1 )
海洋終生浮游生物普遍存在隱種,其物種形成要
比想象得快; 2 )由於引種的廣泛存在,形態種生物多樣性無法反映
海洋終生浮游生物真正的物種多樣性; 3 )地理隔離有助於
海洋終生浮游生物隱種的形成,但異域物種形成的作用仍值得商榷; 4 )生態物種形成很可能是
海洋終生浮游生物物種形成的主流模式.
海洋終生浮游生物強基因流下快速的物種形成有悖于生物進化常理,解決該悖論將有助於我們對
海洋物種形成和生物多樣性的理解
On the demand of application and according to the soluhons menhoned above, a method of displacement waiting auto - sy ' nchronizing is put forward, which is based on match filters. at the end a complete and speeflc set of hardware circuits and software programs which haplements the scheme, is also presented in the ancle. the synchronization system was tested in the pool and in the shallow wate near m port, the result of the test shows that its performance is satisfactory
論文著重介紹實現了跳頻通信系統同步的一般方法,並詳細分析和對
比跳頻同步系統的捕獲方案,在此基礎上,提出了一個基於匹配濾波器的位移等待式自同步方案,設計、完成並給出了詳細硬體連線電路圖、軟體程序流程圖和部分程序清單,該自同步方法在實驗室水池實驗取得良好的效果,並在廈門港
海域進行了現場實驗測試,具有較低的誤碼率和一定的檢測概率,結果令人滿意。
The task force emphasized the danger of armed rebellion and guerrilla warfare in the caribbean and andean countries.
工作小組強調了加勒
比海國家和安第斯山脈國家進行武裝叛亂和游擊戰爭的危險。
Antigua in particular is engaged in a strong defense of internet gaming, one of the tiny caribbean states few economic success stories
安提瓜是加勒
比海小國中為數不多的經濟成功國家,該國對網上博彩給予了強力保護。
Tropical storm emily closed in on the windward islands of the eastern caribbean on wednesday, prompting storm warnings from barbados to the netherlands antilles
熱帶風暴艾米麗emily星期三在東加勒
比海的上風小島登陸,巴貝多島迅速向荷蘭安的列斯群島發出警告。
Agreed that the implementation aspect is important. however, it will be difficult to delineate a common yardstick to assess the ease of implementation for different options ( for instance, it is hard to say creation of new development land by reclamation is easier than by resumption )
同意規劃的執行是一個重要的考慮因素,但要
比較方案執行的難易或有一定困難;例如,很難確說填
海比收地更容易製造新的發展土地。
He saw overhead a black and tempestuous sky, across which the wind was driving clouds that occasionally suffered a twinkling star to appear ; before him was the vast expanse of waters, sombre and terrible, whose waves foamed and roared as if before the approach of a storm
在他的面前,是一片無邊無際,陰沉可怕的
海面,濁浪洶涌,滾滾而來在他的背後,聳立著一座
比大
海比天空更黑暗的,象一個赤面獠牙似的怪物,它那凸出的奇巖象是伸出來的捕人的手臂。
Chichester was already 58 years old when he won the first solo transatlantic sailing race
奇切斯特贏得首屆橫渡大西洋單人航
海比賽的時候已經58歲了。
Late last year, for example, researchers analyzed data from canadian and european satellites and found that the greenland ice sheet is not only melting, but doing so faster and faster, with 53 cubic miles draining away into the sea last year alone, compared to 23 cubic miles in 1996
去年年底,研究人員分析從加拿大與歐洲衛星所得到的資料顯示,格林蘭島上的冰原融化的速度越來越快, 2005年一年之內就有53立方英哩(約85立方公里)的冰塊融化到大海,比1996年的23立方英哩(約37立方公里)快上許多。