low-density layer 中文意思是什麼
low-density layer
解釋
低密度層-
In many lakes in summer that is a warm low - density layer ( epilimnion ) lying above a colder denser layer ( the hypolimnion ), the zone of rapid temperature change between the two layers being celled the thermocline
夏季，多數湖中溫暖的低密度水層（湖面溫水層）在寒冷的較高密度水層（湖底凈水層）之上，中間夾有溫度改變較快的水層（變溫層） 。 -
At the same time, the quality of different - state water was studied. the results show : the soil bulk density of the fir wildwood heightens with the increase of soil depth, specifically 0. 74 > 0. 94 andl. 34g / cm3, the saturated, canaliculus and field moisture contents decrease gradually in layer a, b and c, accordingly the soil total foveola decreases gradually, and the moisture - hold capacity of the soil lessens gradually with the increase of the soil depth ; there is small difference of the soil bulk density between layer a and b in the outer space, which are respectively 0. 92 and 0. 99g / cm3, and the other laws are the same as the in ner in the main ; reverse success often occurs in the low position of the thoroughly - fell trace and plateau marsh is formed
結果表明：冷杉原始森林土壤容重隨土層深度的增加而增大，分別為0 . 74 、 0 . 94 、 1 . 34g cm ~ 3 ，飽和持水量、毛管持水量、田間持水量a層、 b層、 c層逐漸減小，十壤總孔隙度也逐漸減小，土壤的持水能力隨深度的增加逐漸減弱；林外空地a層、 b層十壤容重相差不人，分別為0 . 92和0 . 99g cm ~ 3 ，其它規律與林內人體相同：皆伐跡地的低洼地段容易發生逆行演替，形成高原沼澤地。 -
Based on the two ctd data sets from the cruise of the summertime in 2000 and wintertime in 2001 in bohai sea and the collected historic observed thermohaline data, we analyse systemically the distributional characteristics of temperature, salinity and density in wintertime and summertime in the bohai sea and the results reveal that the current hydrologic characteristics of the bohai sea have some obvious variances relative to the previous research results. in summer there are three low - temperature centers in the middle - layer and underlayer of the middle parts of the bohai strait, liaodong bay - mouth and bohai bay - mouth, but there is a uniform high - temperature center in the middle part of the bohai sea. in winter the isotherms extend westward and northward to the bohai sea from the warm core of the bohai strait and a cold - water tongue off the qinhuangdao spreads southeastward out, so the saddle - like isotherm pattern is formed in the middle part of the bohai sea
利用2000年夏季和2001年冬季渤海兩次ctd資料和以前收集的渤海溫鹽調查資料，分析了渤海冬、夏季溫鹽密度的分佈特徵，結果表明，渤海現有的水文特徵與以往研究結果相比發生了明顯的變異：夏季在渤海海峽、遼東灣口和渤海灣口中部中、下層存在三個低溫中心，在渤海中部則出現一個上下均勻一致的高溫中心；冬季等溫線以渤海海峽暖中心向西和向北兩個方向伸入渤海，而從秦皇島外海有一冷水舌向東南方向伸展，在渤海中部海域形成「馬鞍狀」等溫線結構。 -
In cradle while cut down divides low - grade forest, notice to do authority of nice area branch and low layer vegetation clear the job, can reduce rat already kind concealment place, destroy mouse kind live condition, reduce rat kind density, can reduce miscellaneous bush to wait again at the same time right young forest competition, those who be helpful for forest is hale grow and shift to an earlier date closing cheng lin, the forest land after yu ren is shut goes against rat kind habitat, can rise to control rat to feel the effect that produces greatly
在撫育伐除劣等林木的同時，注重做好地面枝權及低層植被的清理工作，既可減少鼠類的隱蔽場所，破壞鼠類生存條件、降低鼠類密度，同時又能減少雜灌木等對幼林的競爭，有利於林木的健壯生長和提前郁閉成林，郁人閉后的林地不利於鼠類棲息，可以起到控制鼠害大發生的作用。 -
Several influence factors to result plasma drift in hainan were analyzed. in this paper the characteristics of ionospheric parameters variation were analyzed systematically and some new results in storm - time such as seasonal behaviors were obtained ; it is the first time to investigate the ionospheric drift behavior in hainan and some new results was obtained, the relationships between each two plasma drift velocity components in storm time in hainan were found and the electric filed variation in hainan ionosphere also was obtained ; the results also show that there are big differences of the ionosphere parameters bo and bl obtained from the data with that obtained from the iri - 2001 applied for hainan ; a new phenomena was found during a strong magnetic storm, that a layer with very strong electron density and density grad was found during the recovery phase of the storm, its horizontal scale is beyond 100km and temporal scale is about 2 hours, this phenomena repeated 3 times continuously. a type of negative disturbance in high and low latitude but positive disturbance in east - asia also has been found
本文較為系統地給出了海南地區電離層的參數變化特徵，特別是得到了一些暴時與以往不同的季節特性；第一次給出了海南地區的電離層等離子體漂移特徵，發現等離子體漂移暴時擾動在三個方向上有內在的聯系，得到了電場變化曲線；研究結果還表明海南電離層的半厚指數和形狀參數等與國際參考電離層iri - 2001存在很大差別；通過對強磁擾動事件期間的參數變化特性分析發現，在磁暴恢復相期間海南地區電離層底部存在一個電子密度非常大的高密度區，高密度區底部電子密度梯度隨高度急劇增加，該區域的水平尺度可達100公里以上時間尺度約為2小時，連續出現過三次，這是一個在海南從來未發現的新現象；研究還發現了暴時東亞地區電離層擾動會出現高低緯負相而中緯正相的現象。 -
Tgs method utilizes a high - purity germanium ( hpge ) detector with large volume to perform low - resolution tomographic transmission scans on each layer and yield absolute images of the matrix ' density
測出的線衰減系數是絕對值，成像只要求低分辨。然而， tgs有ct測量所沒有的發射測量和圖像重建的問題。 -
The high density dislocations behave like deep - level donors and the dislocations scattering is considerable at low temperature especially. besides, when the insb buffer layer thickness became 80nm, the roughness of insb epilayer increased. the initial stage of insb growth on gaas substrate is
透射電子顯微鏡發現，在insb / gaas薄膜的界面處分佈有間距為3 . 5nm的失配位錯陣列，界面處的高密度位錯可體現出類似深能級施主的特性，尤其在低溫下對載流子散射更加顯著。 -
In next mobile communication system to suffice more and more high - speed data service and demand of qos ( quality of service ) many new wireless link layer transport technologies are going to be used such as mimo ( multiple input multiple output ), ofdm ( orthogonal frequency division multiplexing ), channel coding and acm ( adaptive coding modulation ) etc. low density parity check ( ldpc ) codes were first discovered in 1960 ’ s which belong to linear block codes with their parity matrix being sparse
下一代移動通信系統為了滿足移動用戶對高速、寬帶數據傳輸業務不斷增長和更高服務質量的要求，採用了許多新的無線鏈路傳輸技術，包括多天線發射和接收技術、正交頻分復用技術、通道糾錯編碼技術和自適應編碼調制技術等。上世紀60年代提出的低密度校驗碼，是一種校驗矩陣為稀疏矩陣的線性分組碼。
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