水下總阻力 的英文怎麼說
中文拼音 [shuǐxiàzǒngzǔlì]
水下總阻力
英文
total submerged 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...
- 下 : 下動詞1. （用在動詞后,表示由高處到低處） 2. （用在動詞后, 表示有空間, 能容納） 3. （用在動詞后, 表示動作的完成或結果）
- 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...
- 阻力 : 1 （阻礙事物發展的外力） obstruction; resistance 2 [物理學] resistance; drag; drag force; nowel; ...
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Exciting method is used to measure the damping, the four damping coefficients of the radial part and a damping coefficient of the thrust part can be obtained though hammering the testing bearing which is in a equilibrium position. based on the testing data, the dynamic characteristic curves of the radial - thrust floating ring hybrid bearing are drawn and compared with the theoretical curves
採用激振法測量軸承的阻尼，對處于平衡位置的測試軸承分別沿水平方向、上45度方向及軸向進行錘擊，根據錘擊法原理求得各個轉速下軸承徑向部分內、外膜總阻尼系數以及推力部分內、外膜總阻尼系數。The method is described as follows : the velocity of the moving part and the gas chamber pressure were measured with a dynamic test measurement system ; a dynamic model was built on force analysis of the moving part ; the total kinetic resistance replaced the horizontal friction and water resistance ; then the resistance - velocity relation curves at moving stages were obtained ; with the empirical formula of the gas chamber pressure and the resistance - velocity relation curves, the preliminary dynamic characteristics were analyzed and the structural form and key parameters of an underwater assault rifle were determined
具體方法為：由動力學測量系統測得活動件速度和氣室壓力；分析活動件的受力，建立動力學模型；以運動總阻力代替水平方向上的摩擦阻力和水阻力，獲得各運動階段的阻力速度關系曲線；利用氣室壓力經驗公式和阻力速度關系曲線，對水下突擊步槍進行初步的動力學分析，確定其構造型式及主要參數。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。Exposure to uv - b radiation reduced the height, leaf area of plants, and the weight of roots, stems and leaves. as a result, total biomass and accumulation of dry matter were decreased. exposure to uv - b radiation significantly increased the stomatal diffuse resistance and decreased the transpiration rate ; however it hardly affected the water content of seedlings
含量、而增加zr的含量;導致氣孔阻力增加，蒸騰速率下降:對括樓植株水分含量無影響;使植株生長受抑，表現為矮化，植株各器官及總生物量增加均受到影響，干物質積累量也相應下降; uv . b輻射對括樓根冠比無影響。Abstract : this paper analyzes the reason of pressure drop increase of the downstream equipment - coldbox caused by water penetration of the molecular sieve in jngcc, summarizes the treatment, and gives recommendations
文摘:對工廠生產中分子篩水「穿透」造成其下游裝置? ?冷箱阻力增大的原因進行了認真的分析，總結了處理方法及分子篩處理后的運行狀況，並提出了改進建議。Respective simulation of the liquid cooling system and the circulatory system of cooling fluid, which mainly concerns the simulation model of the four major components in the refrigerating system and the water pumps and heat exchangers in the cooling circulatory system. experimental research of the assembled system of liquid cooling system, which yields the system perform parameters of refrigerating capacity and resistance loss in different working conditions. collection and comparison of the experimental data got from simulation and experimental research, which proves simulation and the experiment result are well tallying, hereby, testifies the emulational veracity of the cooling system
主要對製冷系統中四大部件和冷卻液循環系統中的水泵、換熱器進行了數學建模;利用組裝的液冷源系統進行實驗研究，得到不同的工況下系統的製冷量、阻力損失等系統性能參數;對模擬和實驗研究中得到的大量實驗數據進行匯總比較，發現模擬和實驗結果吻合較好，驗證了液冷源系統模擬的準確性。The paper draws some valuable conclusions : the limited bearing capacity of manual excavation filling pile is much higher than the limited bearing capacity of machine drilled filling pile ; through grouting injection around the pile shaft, the pile bearing capacity can be effectively improved ; proportion of resistance force around the pile side in total load is much larger than that of pressure on the pile tip, and the intensity of resistance force around the pile side is 30 - 50kpa on average
得出一些有價值的結論：人工挖孔灌注樁的極限承載力明顯高於鉆孔灌注樁的極限承載力；地下水位對樁基承載力有顯著影響；利用樁側注漿可有效提高樁的承載力；樁側摩阻力所佔總荷載的比例遠大於樁底壓力，樁側土的摩阻強度平均值為30 50kpa 。Some essential hydraulic properties of throttled surge tank are carefully analyzed through summarizing the past study. the research includes : 1. the development of the throttled surge tank has been introduced systematically
本文在總結、分析前人研究成果的基礎上，對阻抗式調壓室的若干水力特性問題進行了系統的研究探討，主要研究內容如下： 1分享友人