阻水片 的英文怎麼說
中文拼音 [zǔshuǐpiān]
阻水片
英文
waterstop-
Using domestic strained integrated resistor as weighing sensor, at89c52 single chip as control unit, combined with arithmetical magnification, analogtodigital conversion ( a / d ), real time clock, liquid crystal display ( lcd ), and series communication interface, a minitype automatic weighing lysimeter is developed. that made measurement of evapotranspiration become conveniently and effectively in studying on water use of crops
為了方便、有效地測定植物的蒸散，為水分利用研究提供價廉物美、簡單易用的儀器，本研究利用國產的集成電阻應變式稱重傳感器，採用at89c52單片機作為控制單元，結合運算放大、模數轉換、實時時鐘、液晶顯示、數據存儲、串列通信等外圍介面電路，研製了小型自動稱重式蒸散儀。Proceed from the angle of energy and taking considerations on interference factor and drag of airfoil profile, a kind of new typed calculation method on the design of vane air foil was put forward according to the vortex aerodynamics model of the rotor of wind turbines with horizontal axis
摘要根據水平軸風力機轉子的渦流氣動模型，從能量的角度入手，考慮干涉因子和翼型阻力，提出了葉片翼型設計的一種新型計算方法。( 3 ) hydraulic resistance coefficient formulas are derived according to a great number of flume experiments and relative theory analysis
（ 3 ）通過系列水槽試驗和相關理論分析，提出了十字片梅花加糙的有效水深和水力阻力系數計算公式。Accessories : high grade pp overflow, filter & stopper
附件：高密度pp去水、濾片和阻水蓋。By physical and chemical testing and comprehensive analysis, it is suggest that deposited sands and rubber relics lead to local clogging of the pipe, so vortex around the clog lead to erosion abrasion
通過理化試驗和綜合分析后認為，海水中沉積的泥砂和管內橡膠殘片集結成一體，對傳熱管形成局部阻塞，水流在阻塞物周圍產生渦流，發生沖蝕磨損，造成鈦管泄漏失效。Hebi can produce over 5000 industrial products, in which coal of hebi coal group company, high standard cement by tongli cement company, daily chemical products by tianyuan company, auto connectors by tianhai group, chipped capacitors by caihe company, fusing resistors by boda group, meat products by yongda company are famous and on the leading place in the market
工業產品5000多種，其中鶴壁無煙煤、同力水泥公司高標號水泥、天元公司日用化工品、天海集團汽車接插件和線束、華中科技公司、彩鶴公司片式電容、博大集團熔斷電阻、網路電阻、大用和永達公司肉製品等一大批知名品牌，在河南省乃至全國同行業享有較高聲譽。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。( 3 ) using conformal mapping, the longitudinal protrusion height and the lateral protrusion height on the v - grooved surfaces are given, on this basis, some drag reducing features in parallel - flow, cross - flow and enlarge - flow are presented and analyzed ; in addition, drag reducing features with blade - shaped grooves and u - shaped grooves are discussed, consequently, the riblets designing criterions are suggested which will reduce the drag and noise most effectively underwater
（ 3 ）利用保角變換方法求出v ?型條紋的縱向和橫向突出高度，在此基礎上得出縱向流、橫向流和帶角度流動時的降阻特性，並分析結果；而且分析了葉片型條紋和u ?型條紋表面上的降阻情況，提出水下具有最佳降阻效果的條紋表面設計準則。The antiscaling and corrosion inhibition by low - phosphate formula agents were studied using polarization curve method and weight loss method in nanjing tap - water
摘要採用靜態阻垢、旋轉掛片、極化曲線等方法研究了一系列低磷配方在南京自來水濃縮不同倍數時的緩蝕阻垢作用。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。Arbuscular mycorrhiza can improve the ability of resisting drought from several aspects : hyphal enhances plants ' chances of absorbing water from soil ; it can improve plants ' phosphorus and another minerals ' nutrition, increase the content of chlorophyll ; observably enhance transpiration and stoma conduction ; reduce the flow of water, permanent languish point, stoma resistance ; change the balance of hormone, promote accumulation plant proline and capability of nitric reductive enzyme
叢枝菌根真菌可以通過以下幾個方面增強植物抗旱性：通過菌絲增加植物對土壤水分的吸收；改善植物的磷營養及其他礦質元素營養；能顯著提高蒸騰速率和氣孔導度；乾旱條件下降低植株葉片水勢、永久凋萎點、葉片飽和虧、氣孔阻力和恢復時間；改變激素平衡。Moisture content of a piece of sawn timber - part 2 : estimation by electrical resistance method
單片鋸材的含水量.第2部分:由電阻法估算The compact algorithms for heat release from floor, indoor thermal environment, control characteristic and energy efficiency of room with imbed pipe floor heating system were studied in this dissertation. the heat release from floor is key nodes in designing of imbed pipe floor heating systems. the existing plate fine model is corrected to improving its accuracy by amending the temperature of fine root
文中對原有的平面肋片簡化演算法採用了肋基溫度修正，提高了其計算準確度；根據埋管低溫熱水輻射地板結構特點，利用地板導熱形狀因子計算地板當量熱阻，首次提出了更為簡便的當量熱阻演算法，該演算法將影響地板傳熱的物性參數和各種結構參數歸結到當量熱阻中，方便於工程分析和計算。Abstract : a new type of rotating packed bed （ rpb ） filled with holed disk packing, has high mass transference character by means of the centrifugal field it is used for simulating flue gas desulfurization and achieved of good effect the desulfurization efficiency of rpb by boot water is above 75 % accompanied with small gas resistance
文摘:一種利用離心力場強化傳質的新型旋轉填充床反應器以孔型碟片為填料用清水吸收模擬煙氣中的二氧化硫時的脫硫率達75 %以上，用於模擬煙氣脫硫也取得了很好的效果，而且氣阻也很低To this problem, on the basis of the work property and characteristics of the water turbine ' s blade. the finite element mechanics model of blade vibration characteristic is described with the eight - node three - dimensional nonconforming and all parts of blade damp are analysised, the calculating model of blade damp is built, the tackling method of blade damp in calculating of dynamic stress is presented
本文根據水輪機葉片的特點和工作性質，採用空間八結點非協調等參單元描述水輪機葉片運動特性的有限元力學模型，詳細分析了水輪機葉片阻尼各組成部分，並建立了葉片阻尼的計算模型，提出了葉片阻尼在動應力計算中的處理方法。According to bernoulli theorem, kinetic energy and potential energy change due to the thermokinetic differences of steam and conden sation water, and action valve plate starts and stops to choke air and drain water
圓盤式疏水閥是根據伯努力熱動力原理，利用蒸汽和凝結水通過閥孔時流速和何種產生變化的不同熱力學性質，驅動閥片開關閥門，從而達到阻汽排水。Based on optimal hydrothermal modification conditions, the regular hexagonal plates of mg ( oh ) 2 with uniform size and smaller bet surface area were formed after the hydrothermal treatment
在合理的水熱改性條件下，能夠制備出大晶型、低比表面積、高分散的規則六方片狀氫氧化鎂阻燃劑。分享友人