穩定脈動 的英文怎麼說
中文拼音 [wěndìngmàidòng]
穩定脈動
英文
steady pulsation- 穩 : 形容詞1 (穩定; 穩當) steady; stable; firm 2 (穩重) steady; staid; sedate 3 (穩妥) sure; rel...
- 定 : Ⅰ形容詞1 (平靜; 穩定) calm; stable 2 (已經確定的; 不改變的) fixed; settled; established Ⅱ動詞...
- 脈 : 脈名詞1. (動脈和靜脈的統稱) arteries and veins2. (脈搏的簡稱) pulse 3. (像血管的組織; 連貫成系統的東西) vein
- 穩定 : 1 (使穩定) stabilize; steady 2 (穩固安定) stable; steady 3 (物質的性能不易改變的作用) stabi...
- 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
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We prospectively investigated whether measurements of carotid intima - media thickness in the presence or absence of albuminuria in patients with stable chest pain syndromes can be used as a noninvasive test algorithm for prediction of significant coronary artery disease
前瞻性研究穩定性胸痛綜合征患者在有/無蛋白尿時的頸動脈內膜中層厚度測量能否作為預測重要冠狀動脈疾病的一種無創性檢查方法。Effect of anthocyanin - rich extract from black rice on stability of atherosclerotic vulnerable plaque
黑米皮花色苷對動脈硬化斑塊穩定性影響Effect of rhodiola rosea on femoral artery plaque stability in arteriosclerosis rabbit
紅景天對兔股動脈粥樣斑塊模型穩定性的影響Study of plasma fibrinogen and serum troponin in acute coronary syndrome and stable angina
在急性冠狀動脈綜合征和穩定型心絞痛中的變化研究Embolization with detachable balloon and trapping of the ipsilateral internal carotid artery were performed smoothly, and the patient discharged with easy - looking and stable condition
經施以可脫離式氣球栓塞術及內頸動脈結扎術后,病患追蹤檢查至今已六個多月,病況穩定。Water feeding framework takes electromagnetism water valve as administration component and is added relief valve for stabilizing hydraulic pressure ; the system has large, middle and small water valve that changes unlock combination of electromagnetically operated valve, which can get seven different water flux ; if it is necessary, it should adopt microseism water feeding that can make water feeding get stepless timing
3加水機構加水機構採用電磁水閥作為執行元件,加入調壓閥穩定水壓,系統共設大中小三路加水閥,變化電磁閥的開啟組合,可以得出7種不同的加水流量,必要時採用脈動加水法,可使加水達到無級調速。In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 , and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory
由直流脈寬調速系統( pwm )和位置環構成的定位系統中,速度環的參數隨負載特性;電網電壓;給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 , 2 .因此在設計位置環的離散滑模控制時,必須針對速度環(即位置環的控制對象)的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ,以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果,本文作了對比性研究,並將該設計方法用於工業試驗中,取得了滿意的結果Since the hydrogen - burning shell and helium - burning core do not produce energy in a stable and steady manner, the star will pulsate and generate strong stellar wind
由於這時燃燒氫和氦以產生能源的過程並不穩定,星體除了會不斷脈動外,更會產生強勁的恆星風把外殼吹掉。Their shells, which apart from hydrogen, helium, and carbon also contain portions of the heavy elements formed in the stellar core, are inherently unstable, and their pulsing creates a withering stellar wind a billion times stronger than the solar wind we know today
它的殼層除了氫層、氦曾和碳層外還有包含一部分產生自恆星核心的重元素,天生的不穩定,它們的脈動產生了一種毀滅性的星風,比我們現在知道的太陽風要強數百萬倍。Through the experiment, the following results were given out, whether the system was rolling or not, there were always density oscillation gradients when the two - phase flow instabilities occurred, and the stability of the system was always strengthened with the increasing of the inlet mass flow or the increasing of the inlet subcooling of the test tube
實驗結果表明,無論是搖擺還是不搖擺,系統發生的不穩定類型中都有密度波型脈動成分,系統的穩定性總是隨流量的增加而增強,隨入口過冷度的增加而增強。Carville dg, dirmtrijevic n, walsh m, et al. thrombus precursor protein : marker of thrombosis early in the pathogenesis of myocardial infarction [ j ]. clin chem, 1996, 42 ( 9 ) : 1537
諸俊,何曉東,葉書來,等.急性心肌梗死與不穩定心絞痛患者血栓前體蛋白和肌酸激酶的檢測[ j ] .中國動脈硬化雜志, 2002 , 10 ( 2 ) : 165 - 166The technology of alternating - current - boosting by way of constant current is successfully used to charge capacitors with 25 kilojoules of energy in only eight seconds. rail - gap switch with performances of long life and highly steady state are designed. and the high voltage pulse generator, which can produce low - excursion and fast - rise pulses, are designed by using double trigger circuit and hydro - thyristor as switch
在大功率恆流充電技術上,成功的應用了交流調壓式恆流技術,可以在8s內讓電容器儲存25kj的能量;設計出了長壽命、高穩定的軌道開關;採用氫閘流管做開關,使用雙觸發電路,研製出了低抖動、快前沿的高壓脈沖發生器(點火機) ;採用單片機和pld ,研製出了精度為10ns的延時同步機。An intensity modulated fiber optic micro - accelerometer with a digitally feedback circuit is designed. this sensor employs a graded index lens with a reflective coating on one end and measures the relative displacement between the lens and a pair of optical fibers
在本系統中設計了脈沖數字式再平衡迴路,使得該微型光纖加速度傳感器和一般的光纖傳感器相比,又具有動、靜態性能較好,精度、穩定性較高等優點。Theoretical result indicated that the self - q - switching in er - doped fiber laser based on sbs process was feasible in mathematics, and the conclusion has been presented that the dynamic characteristics of output pulse by sbs are effected tinily by the length of er - doped fiber in the system
模擬實驗結果表明利用單模光纖的受激布里淵散射效應可在摻鉺光纖激光器系統內穩定形成自調q過程,同時得到sbs產生激光脈沖動態特性受到摻鉺光纖長度改變量影響不大這一結論。Abstract : as the heart of twt , the structure stability of grided electron gun directly affect pulse output performance of twt , and the structural reliability under vibration stress are especial - ly important for today ' s manufacturers
摘要:柵控電子槍作為行波管的「心臟」 ,其結構的穩定性直接影響著管的脈沖輸出性能,特別是在振動應力下的結構可靠性更是當今生產單位關注的重點。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究,並且針對傳統頻譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利用小波分析方法在時域和頻域上同時具有良好的局部化性質,通過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同頻帶內,獲取微弱信息和提取優勢頻率,並對其作振源分析,得出開停機初始時刻因水流不穩均出現強烈的振動現象,且低頻段信號能量最大,開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。From some characteristics observed, such as the short lift time, narrow frequency band, fast frequency drift, quasi - periodic pulsation, spike event and complex magnetic structure, it is considered that the radiation mechanism of these events may be principally due to the electromagnetic waves magnified directly by the instable electronic cyclotron
從它們的觀測特徵:短壽命,窄頻帶,頻率快速漂移,及尖峰事件與磁結構復雜的大黑子活動區密切相關等,認為這些事件的輻射機制可能是電子迴旋脈澤不穩定直接放大電磁波所致。This product, adopted pwm integrated circuit and mosfet, igbt that were imported from the overseas, has the following merits : quick - response, strong interfere - proof, stable frequency and voltage, low consumption when light loading, high efficiency and reliable performance, it can be applicable to the family use, pasture region, work with the wind generator and some other places where the power failure often occurs
本品採用pwm (脈寬調制)集成電路和進口大功率mosfet 、 igbt等器件,具有應變快、抗干擾、自動穩定頻率和電壓、空載損耗低、效率高、性能可靠,是家庭,牧區,風力發電機配套以及其它野外經常停電地區提供交流電的必備的電器。The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other
當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時,剪切層對其有選擇放大作用,形成渦環結構,剪切流動中渦環與碰撞壁撞擊,在碰撞區域產生壓力擾動波並向上游反射,在上游剪切層分離處誘發新的擾動的產生,當新擾動與原擾動匹配時,射流上游就被不斷地受到周期性激勵,腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。Abstract : on the basis of setting up the angle motion mathematic model of the terminal correct projectile forced by impulse corrective force, this paper discusses the dynamic response of the terminal correct projectile and response spectrum. the general conclusion that profit to design impulse correct projectile stabilized by taifl wing is given
文摘:建立了末段脈沖修正彈在脈沖修正力作用下的角運動數學模型,分析了末段修正彈對脈沖修正力的動態響應特性和響應譜,給出了對尾翼穩定脈沖修正彈設計有普遍指導意義的結果。分享友人