水采樣系統 的英文怎麼說

中文拼音 [shuǐcǎiyàngxìtǒng]
水采樣系統 英文
hydrophone system
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 采 : 采名詞（采地） feudal estate
  • 樣 : Ⅰ名詞1. （形狀） appearance; shape 2. （樣品） sample; model; pattern Ⅱ量詞（表示事物的種類） kind; type
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. The hardware has two input channels of high - speed analog signal, with the signal amplitude of 0 - 5v, the conversion precision of 12bits, and the maximum sampling rate of 400ksps. this system includes 4 dsps ( adsp 2181 ), which can be arranged as a pipe line processing array. many algorithms can be realized in this system

    系統硬體有兩路模擬數據採集通道，模擬信號輸入范圍為0 ? 5v ，轉換精度為12位，最高采樣率400ksps ；系統包含4片dsp （ adsp2181 ）構成的流水線型的處理陣列，可用於實現各種演算法；系統的控制邏輯由fpga完成。
  2. More than forty coal samples collected from thirteen coal mines in the north, central and south parts of qinshui basin were studied in detail so as to find out the main control factor affecting pore differential development of the high - rank coal reservoirs in the basin

    為查明影響沁水盆地高煤級煤儲層孔隙系統差異發育的主控因素，對采自該盆地北、中及南部6個市縣13個礦區的40餘件樣品進行了詳細解剖研究。
  3. This thesis probes into design of microcomputer system taking single chip microcomputer as central, anti - interference, security segregate and design of interface circuit etc. furthermore, the option to cycle of sampling various frequencies examine signals is also analyzed and it was utilized in the examine system. thus, the dependability and stability problem of the microcomputer examine system of hydraulic resistance testbed have been solved better, make this test a modern techniques and practibility is good

    本文在以單片機為核心的微機系統的設計、介面電路設計、抗干擾技術及安全隔離技術等方面進行了較深入的研究，分析了不同頻率檢測信號采樣周期的選擇，並在檢測系統中得到了應用，較好地解決了水阻試驗臺微機檢測系統的可靠性和穩定性問題，使得該試驗臺技術先進、實用性好。
  4. Through measuring slope forms on the spot, serried sampling, physical and chemical analyzing, and measuring soil erosion from natural and artificial rainfalls, the project researched in the approaches and behaviors of soil erosion affecting contents of soil carbon and nutrient, and the law of soil carbon and nutrient distributing in micro - topographty under influences of soil erosion. in the same time, supported by geographic information system, models of soil carbon and nutrient changing with soil erosion have been built, and spatial processes of soil erosion affecting soil carbon and nutrient have been simulated, and annual and long - term changing of soil carbon and nutrient under impact of soil erosion have been estimated and forecasted, and synchronously, a elementary assessment for different soil erosion management has b een performed by using the models built in the study

    本研究以三峽庫區秭歸縣水田壩鄉王家橋小流域四個徑流試驗區二十個標準小區為研究對象，通過坡形實地測量、坡面密集采樣的顆粒分析和養分含量分析以及人工模擬降雨實驗，研究了土壤侵蝕對土壤碳和養分的影響途徑和表現，侵蝕作用影響下土壤碳和養分在微地形空間的分佈規律；同時，在地理信息系統的支持下，建立了侵蝕條件下的土壤碳和養分變化模型，模擬了侵蝕對土壤碳和養分影響的空間過程，預測了侵蝕影響下土壤碳和養分的年變化及多年變化，並通過研究建立的模型對不同侵蝕控制措施進行了初步的效益評價。
  5. In addition to a systematic plan that governs water sampling at 1, 650 sample points in the water supply district, advanced equipment and professional technologies are also adopted for as many as 86 items of water quality examinations

    除了有系統的訂定計畫，對供水區1 ， 650個代表點進行采樣，同時運用先進的設備與專業的技術，進行高達86個項目的水質檢驗。
  6. Parallel structure of poly - phase decomposition and parallel mixer is applied in the ddc circuit, it solves the bottleneck in mixing and increases the handle speed. the partition of the tuning channel according to the digital mixing sequence, and the ddc by means of decimating first, the low - pass filtering and mixing realize efficiently the down - conversion of the variable carrier frequency band - pass signal. according to the structure of the ddc and the requirement of the frequency

    短數據快速測頻演算法的具體實現:使用并行流水線的設計方法，提高了系統的數據吞吐率，在100mhz的系統時鐘下，能夠實時處理400mhz ~ 600mhz速率a / d采樣的數據，在64點采樣， 100mhz系統時鐘情況下，初次測頻佔用時間640ns ，以後每次測頻佔用時間縮短到160ns ，實時地提供多相濾波下變頻所需的載頻位置信息，縮短了接收機的調諧時間。
  7. As the agricultural nfs is the most important factor for water environmental deterioration and lake eutrophication in china, more and more scientists and technologists focus on the control countermeasurc and pollution mechanism of agricultural non - point source ( nfs ). based on the investigation of natural resource and agricultural distribution, the loss rule of nitrogen and phosphorus in the typical land of qiandao lake watershed and distribution rule of the phytoplankton and physico - chemical characteristic in the lake were studied, and the input loading of nitrogen and phosphorus was also calculated by the annagnps model in this thesis. according to the routine monitoring data of the water environment in qiandao lake from 1989 to 2001, the concentrations of toxic substance and heavy metal were under the monitoring limit, but the total nitrogen ( tn ) and total phosphorus ( tp ) were much higher than the criterion for lake and reservoir

    本文調查了千島湖流域的自然資源和農業生產情況，研究了典型坡地降雨徑流中的氮、磷污染物的輸出規律，利用annagnps模型估算流域農業非點源污染物輸入負荷，並在千島湖內設點采樣，對水質理化指標和浮游植物群落進行系統的研究，得出以下結論： 1989 2001年間的水環境常規監測資料統計分析表明，有毒物質和重金屬濃度長期在監測下限內， no _ 2 - n 、 no _ 3 - n 、 nh _ 3 - n年平均濃度均符合類標準，但湖泊水庫特定項目tn和tp濃度分別為超類和類，呈嚴重超標狀況，湖區主要污染因子是將導致富營養化的物質tn和tp 。
  8. The functional descriptions of these error mechanisms which can reveal how errors of various blocks in adc affect the output sample are provided ; analyses show that the first stage of the converter is dominant in a pipeline

    首先，通過研究流水線采樣保持電路、子adc 、子dac和殘差放大級的主要誤差機制，用函數表達式將誤差等效到采樣輸出端，量化各部分誤差對系統性能的影響。
  9. The system selects micro control unit and programmable logic device as the core of controller, gsm terminal module as communication device, gps as position equipment, a / d sampling for voltage and current checking, solar battery as power supply, switch dc - dc as power voltage conversion, and so on

    以微處理單元與可編程邏輯器件為核心搭建系統控制器，選擇gsm無線通信模塊實現系統通信，全球定位系統實現水標燈定位， a d采樣與轉換實現電壓電流檢測，太陽能電池為系統供電，開關型dc - dc實現電源電壓轉換。
  10. In the paper, the gpr system developed by us employs several optimization techniques to enhance the system performances, including antenna, sampling - hold circuit, orientation wheel, function of system software, multithreading, and signal processing algorithms. as the result the system works more well with these techniques, and its azimuth and distance resolution of 10 cm has been achieved with detection depth of more than 50 cm. the main contents of this dissertation are summarized as following : 1

    本文根據探地雷達系統工作原理，在電子科技大學探地雷達系統樣機研製的基礎上採用了各種有效的優化技術，包括探測前端、采樣保持電路的優化，定位輪、目標定位、多線程技術的應用，數據採集處理和控制軟體功能的拓展、各種有效的信號預處理演算法的應用等，顯著提高了系統的探測性能和增強了探測效果，使得系統方位、距離解析度均達到了10cm ，探測深度大於50cm ，其性能指標達到國外先進水平，為進一步的實用化奠定了重要的基礎。
  11. Based on typical sample, soil survey, environment survey and soil physical - chemical analysis, under the direction of chinese soil taxonomy, according to the principle of stability, discrepancy, dominant and integration of soil series taxonomy, applying to methods of statistic analysis and system integration, the selection of indexes of soil series taxonomy of hydragric anthrosols in chengdu plain soil series taxonomy soil series naming and index were systemically sturied. the results showed : ( l ) the main affectoi of hydragric anthrosols soil series in chengdu plain were : soil structure in 100cm soil depth ; fe2o3 ( dcb ) ; the texture of hydragric epipedon ( cultivation horizon ) ; the proportion of clay and salt in hydragric epipedon ( cultivation horizon )

    本文以成都平原主要水耕人為土為例，在中國土壤系統分類思想的指導下，通過典型采樣、土壤詳查、環境調查和室內理化分析，遵循土系分化影響因子的穩定性、差異性、主導性及綜合性等原則，利用統計分析和系統綜合分析等方法，對水耕人為土的土系劃分指標選取、土系劃分、土系命名及檢索等作了較為系統的研究。
  12. Limited by adc chip ’ s manufacturing processing, it is hard for a single adc chip to acquire the high sampling rate and high precision at the same time. the method of parallel times - interleaved sampling adc system is effective to solve this problem

    受模數轉換晶元發展水平的限制，單片adc晶元很難同時滿足高速高精度的要求，多片adc并行交替采樣技術是突破採集系統這一瓶頸的有效方法之一。
  13. It ' s briefly demonstrated that the overall plan of the close range shortwave marine communication system, which including format of radio propagation, operation frequency, communication architecture, main parameters and the sampling part of receiver

    以水下作戰平臺對母艦的短波通信為背景，對海上近距短波通信系統的總體方案進行初步論證。其中包括電波傳播形式的論證、工作頻段的選擇、通信體制的選擇、接收機總體指標以及接收機采樣部分技術論證。
  14. The floating - point a / d conversion scheme was employed to increase the system ' s dynamic range. complex programmable logic device ( cpld ) was also used to perform the system ' s function such as data sampling trigger control and data storage control, etc. aduc812, a new type of microprocessor with full a / d converter, was utilized to fulfill the a / d conversion

    在數據採集電路設計中，採用了浮點放大技術來提高系統的動態范圍；通過引入可編程邏輯器件來實現觸發控制、存儲控制；采樣過程中應用了時序重疊技術，從而實現了數據採集系統的流水線作業方式。
  15. Under 0. 35um si - cmos process, considering the trade off of accuracy and speed in the adc, 2. 5 - bit were converted in the first stage of the pipeline. using the improved calibration scheme and full difference structure and bottom - plant sampling technique to reduce the errors of the 10 - bit ( 2. 5 + 1. 5 5 + 3 ), 100msample / s pipeline adc

    在0 . 35 m工藝水平下，通過折衷考慮提高系統線性度和降低功耗的要求，將流水線第一級精度取為2 . 5位，採用改進的冗餘位演算法，並結合全差分結構，下底板采樣等技術對一個（ 2 . 5 + 1 . 5 5 + 3 ）結構的10位100msample / s流水線adc系統進行校正。
  16. Water quality - sampling - guidance on sampling of drinking water from treatment works and piped distribution systems

    水質.取樣.從水處理站和管道分配系統采樣飲用水的指南
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