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 。
5 ) the allzyome variety of adiantum reniforme l. var
其
次是與貫眾,生態位重疊
值為0 . 3389 。
A method to calculate quantitatively the adsorption volume or adsorption space of per mass of adsorbent derived from both the adsorbed molecule volume and the maximum adsorbance of a solute in an adsorption isotherm under a given experimential condition is presented firstly for a solid / liquid adsorption system of the solute in a dilute aqueous solution. this method is suitable for not only mono - layer adsorption, but also mani - layer adsorption and micelle adsorpion of surfactant constructed by hydrophile and lipophile groups. therefore, the surface concentration of the adsorbate, cs, deduced from the adsorption volume is possessed of the meaning of true concentration, and the value of the patition coefficient of the adsorbate between solid and liquid phass, p, attained by the cs and the c, solution concentration of the adsorbate, can be accurate. the foregoing a set of calculations are presented for the solid - liquid adsorption systems consisted of the wool fiber and separately dodecyltrimethyl - ammonium bromide ( dtab ) and hexadecyltrimethyl - ammonium bromide ( ctab ) in this paper. this provides a strong basis for adsorption thermodynamic investigation of adsorbate
對稀溶液中溶質的固/液吸附體系,首
次提出了根據吸附分子體積和實驗條件下吸附等溫線中的最大吸附量計算單位質量吸附劑的吸附體積或吸附空間的方法.此法適用於單層吸附,也適用於多層吸附和具有親水親油結構的表面活性劑分子的膠團吸附.由此,吸附質的表面相濃度cs具有真實濃度的含義,相應地,計算得到的溶質的固/液分配系數p就有了準確
值.分別計算由溴代十二烷基三甲銨( dtab )和溴代十六烷基三甲銨( ctab )與羊毛纖維構成的液/固體系分配系數等,為溶質吸附的熱力學研究奠定了基礎
This model has been widely used in the advisement seeking in recent years, and proved to be useful. it is worthy of being popularized
近一年多的時間里,該模板曾多
次在咨詢工作中使用,實踐證明,其實用性較強,具有一定的推廣價
值。
Result : grumbles from the aesthetes, who complain that a group of players costing ? 151m should be putting their gifts to more appealing use, but three more points every time
結果是:唯美主義者抱怨說,一隊價
值1 . 51億英鎊的球員應該把他們的天分用到一些更吸引人的地方去,而不是每
次只求拿到三分。
Deere k a. computational investigation of the aerodynamic effects on fluidic thrust vectoring. aiaa 2000 - 3598
喬渭陽,蔡元虎.基於
次流噴射控制推力矢量噴管的實驗及數
值研究.航空動力學報, 2001 , 16 ( 3 )
The satellite altimetry has developed as a kind of important space geodetic technique since 1970s. the return signals from ocean regions can provide all - weather height information above the sea level repeatedly and accurately. the satellite altimetry has now not only impacted strongly on the field of oceanography and geophysics, but also changed greatly the fact of geodesy
衛星測高作為二十世紀七十年代發展起來的一項空間測量技術,能在全球范圍內全天候、多
次重復、準確地提供海洋表面到衛星距離的觀測
值,在地球物理學領域和大地測量領域有廣泛的應用。
For a class of quadratic finite element diseretization systems of an elliptic boundary problem with jump coefficients under the unstructured quadrilateral grids, we are concerned with two kinds of quadratic lagrangian finite element equations, by analyzing the relationship between the linear finite element and quadratic finite element basis functions, a hew amg method is designed
摘要針對一類帶間斷系數的橢圓邊
值問題,在非結構四邊形剖分下,討論了兩種二
次拉格朗日有限元方程的代數多重網格法,通過利用雙線性元和二
次元基函數之間的表示關系,給出了一種新的網格粗化演算法和構造提升運算元的代數途徑。
Many accounts have been written of this memorable meeting.
關于這
次值得紀念的會議,已有過許多記述。
But this night, my last night as a night guard was different
但我最後一
次值晚班的那晚卻不同。
As is scheduled, all the members of the staff take turn to do late duty
根據安排,全體工作人員依
次值晚班。
This was another glorious victory for the team
這是該隊的又一
次值得稱道的勝利。
A record ice melt up there is opening new shipping lanes that would greatly cut the amount of time it takes to get goods around the world
這
次值得記述的融冰開辟了一條新的航線可使全球運輸的時間大大縮短。
000 worth 150 yuan each wash, twice
戶均150元每年洗樓兩
次值不
值?
The changed rules limit residents to thirty hours of duty at a time
修改過的規定將一
次值班的時間限制在30小時。
Each reformation of operation mode shall put forward new functional demands for cscs, and the realization of any new function in cscs must promote the optimization of operation mode
每一
次值班方式的改革都會對計算機監控系統提出新的功能要求:而計算機監控系統實現的任何新功能也必將進一步推動運行
值班方式的優化。
R indicates the value can only be set one time during program initialization
「讀」表示在程序初始化過程中只能設置一次值。