水面總阻力 的英文怎麼說

中文拼音 [shuǐmiànzǒngzǔlì]
水面總阻力 英文
total surface resistance
  • 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...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 總 : Ⅰ動詞（總括; 匯集） assemble; gather; put together; sum up Ⅱ形容詞1 （全部的; 全面的） general; o...
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 水面 : the surface of the water; table水面操縱 surface manoeuvering; 水面導航 surface navigation; 水面發...
  • 阻力 : 1 （阻礙事物發展的外力） obstruction; resistance 2 [物理學] resistance; drag; drag force; nowel; ...
  1. According to the request of this subject, we have developed the system hardware and software for the slave device and the inspection software running on the pc. in this paper all of the followings is illustrated detailedly, such as the research on the principles of measurement and its realization, three means of water - level measurement that are separately based on photo electricity coder, pressure sensor and potentiometer ; selection of the microchip, we choose an advanced integrated soc ( system on chip ) microchip c8051f021 as the main controller ; realization of signal sampling, processing and its conversion in the mcu ; application of high precision 16 bits adc cmos chip - - ad7705 in our system, designing its interface with the microchip and relevant program ; using a trickle charge timekeeping chip ds1302 in the system which can provide time norm and designing of its i / o interface and program ; additionally, a 4 ~ 20ma current output channel to provide system check - up using ad421. in the system, ad421, ad7705 and the microchip compose spi bus ; to communicate with the master pc, here we use two ways which are separately rs232 and rs485 ; moreover, there are alarm unit, keyboard unit, power supply inspection unit and voltage norm providing unit in the system

    針對研製任務的要求，課題期間研製了下位機系統硬體和軟體，開發了上位機監控軟體，其中所作的具體工作包括：測量原理的研究和在系統中的實現，在本次設計中用三種方法來進行水位測量，分別是旋轉編碼器法、液位壓力傳感器法和可變電阻器法；主控晶元的選擇，我們選用了高集成度的混合信號系統級晶元c8051f021 ；實現了信號的採集和處理，包括信號的轉換和在單片機內的運算；高集成度16位模數轉換晶元ad7705在系統中的應用，我們完成了它與單片機的介面設計及程序編制任務；精確時鐘晶元ds1302在系統中的應用，在此，我們實現了用單片機的i o口與ds1302的連接和在軟體中對時序的模擬，該晶元的應用給整臺儀器提供了時間基準，方便了儀器的使用；另外，針對研製任務的要求，還給系統加上了一路4 20ma模擬信號電流環的輸出電路來提供系統監測，該部分的實現是通過採用ad421晶元來完成的，本設計中完成了ad421與單片機的spi介面任務，協調了它與ad7705晶元和單片機共同構成的spi總線系統的關系，並完成了程序設計；與上位機的通信介面設計，該部分通過兩種方法實現： rs232通信方式和rs485通信方式；系統設計方面還包括報警電路設計、操作鍵盤設計、電源監控電路設計、電壓基準電路的設計。
  2. The results showed that soil surface resistance often increased with evaporation time and cumulative evaporation, but the relation might be changed by variation of difference of vapour pressure between evaporating plane and atmosphere ; difference of vapour pressure between evaporating plane and atmosphere was one of the major factors for determining the soil surface resistance

    結果表明，土壤表面阻力總趨勢是隨蒸發時間的延長和累積蒸發量的增加而增大，但這種關系有可能被土壤蒸發面和大氣間水汽壓差的改變所打破，土壤蒸發面和大氣間水汽壓差是決定土壤表面阻力的主要因素之一。
  3. The second part is the core of this paper. firstly, the author analyzed and appraised the international competitive power of china ' s textile industry from four aspects of competitive ability, competitive potential, competitive strength, competitive circumstances, concluded four conclusion : the international competitive power of china ' s textile industry still had some advantages, the advantages inclined to weaken, the international competitive power of branch industries was in equable, the advantages was gained by the increasing quantity of production and export ; secondly, on the basis of the above analysis, the author analyzed the factors affecting the international competitive power of china ' s textile industry ; at last, the author analyzed the impact of china ' s joining wto on the international competitive power of china ' s textile industry. in the last part, on the basis of the above analysis and research, the author gave some advice on maintaining and improving the international competitive power of china ' s textile industry

    第二部分，這一部分是全文的核心部分，首先從競爭能力、競爭潛力、競爭實力、競爭環境四個方面來綜合分析和評價我國紡織業的國際競爭力，得出我國紡織業目前在世界仍然具有較強的國際競爭力、我國紡織業各分行業國際競爭力水平是不平衡的、我國紡織業的國際競爭力存在弱化的趨勢、我國紡織業國際競爭力主要是靠粗放型增長獲得的四個結論；然後在此基礎上從定性和定量兩個角度來分析影響我國紡織業國際競爭力的因素，指出資本密集度提高、棉花流通體制改革、規模經濟擴大等因素促進我國紡織業國際競爭力的提高，科技創新不足、國內市場競爭不足、環保問題以及亞洲金融危機等因素阻礙我國紡織業國際力的提高；最後再分析加入wto對我國紡織業國際競爭力的影響，總的來說是利大於弊，分為對紡織業總體國際競爭力的影響和對紡織業內各分行業國際競爭力的影響。
分享友人
分享到 Line

分享到臉書