螺旋尾 的英文怎麼說
中文拼音 [luóxuánwěi]
螺旋尾
英文
screwtail-
Following with the condensing of chromatin, nucle us gradually elongates and spires. a large number of vesicles turn into glycogen granules behind mitochondria. the mature typical sperm of cipangopaludina chinensis, having monoflagella, consists of a spiral head with only one spiral buddle conformed of nucleus, a spiral middle piece with four s
中國圓田螺成熟典型精子單鞭毛，由頭、中、尾三段構成：頭段螺旋狀，旋束由細胞核構成，僅單股；中段也呈螺旋狀，旋束由線粒體構成，共四股；尾段非螺旋狀，主要由糖原顆粒構成。Corkscrew tail ? ? a tail that spirals
形容犬的尾巴呈螺旋形。Put the cracked ice into a highball glass. add the vodka and lime juice, stir and top with ginger beer. decorate with a lime slice and a lime rind spiral
首先將碎冰放入雞尾酒杯。隨后加入伏特加和青檸檬汁，攪拌均勻後用姜啤續杯。最後用切片好的青檸檬和切成螺旋狀的青檸檬皮裝飾。Compared to an ordinary rudder, the value of lift coefficient of ichthyoid rudder is about 30 % higher and the maximum rudder angle of it nearly reaches 45 degrees. ichthyoid rudder is a design under such a conception as to effectively utilize the propellers slipstream for rudder action, and featured by having a fish - shaped one - piece construction that is to say - no part of ichthyoid rudder can move in the water
其研究的魚形舵是一個沒有在水下移動的魚尾形剖面單片結構，增加了全舵的剖面拱度，使螺旋槳尾流的折射水量增強，進而增大了水動力的作用，使之比普通流線形舵的升力提高30左右。< uk > the configuration has two tractor propellers, full - span double slotted flaps deflected 45, and a high tail. < / uk >
< uk >實驗模型有二兩拉力螺旋槳，全翼展雙縫襟翼偏轉45 ，並有高置的水平尾翼。 < / uk >Based on the green ' s formula and the assumption of the propeller blade ' s thin sections, a lifting - surface method of propellers with the vortex lattice and equal source panel distributions on the mean camber surface has been introduced for the prediction of steady propeller ' s hydrodynamics in this paper. an approximate kurta condition was applied
基於creen公式和薄翼理論假設導出的升力面方法，採用在螺旋槳拱弧面上分佈離散渦、源布置方法預報均勻流場中的螺旋槳的定常性能，螺旋槳尾渦面上壓力連續性條件採用近似的kutta條件處理。The configuration has two tractor propellers, full-span double slotted flaps deflected 45°, and a high tail.
實驗模型有二兩拉力螺旋槳，全翼展雙縫襟翼偏轉45，並有高置的水平尾翼。The surface of propeller, hub and the vortex of blade is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution
槳葉、槳轂表面和螺旋槳尾渦面採用四邊形雙曲面元離散，以消除面元間的間隙。The vertical tail size is not set to avoid spiral instability because this mode is not critical.
垂尾的大小不是根據避免螺旋不穩定來確定的。因為這種運動模態不是設計狀態。The submarine noise detected by sonar consists of two parts : propeller - generated hydro - dynamical noise, which can be greatly reduced by improving the submarine rear shape ; radiated noise from the submarine structure excited by the centrifugal forces ( moments ) of rotatory machine, which is more complicated and influenced by many factors
聲納所探測的潛艇噪聲包括兩部分，一是螺旋槳運轉帶來的水動力噪聲，二是潛艇主機工作時產生的不平衡力和力矩引起潛艇結構振動，帶動流場振動從而輻射噪聲。通過改進潛艇尾部線型設計，已將水動力噪聲降到比較低的程度，而結構噪聲則復雜得多，與許多因素有關。And a pair of flaps, mounted on the stern stabilizers, enables the vehicle dive or surface in a spiral form, thus ensuring the vehicle almost directly under the support ship
在潛水器的尾部穩定翼上裝有一對小襟翼，它可使潛水器在上浮下潛時，在母船的正下方作螺旋狀盤旋。Under the condition of knowing the mass, stiffness, damping and the real vibration response of stem, the propeller pressure impulses of blade frequency are deduced, these belong to structure dynamics problem that is loading identification problem
摘要在已知船舶的質量、剛度、阻尼以及實測尾端振動速度的條件下，反推出螺旋槳葉頻激振力。Shipbuilding. shaft lines. keys and keyways for tapers on propeller shafts. diameters 110 mm to 680 mm
造船工業.軸線.直徑為mm mm的螺旋尾軸錐形體的鍵接Recent studies have shown single - section helical ct to be useful in differentiating perforated from nonperforated appendicitis, the authors explain, but the accuracy was not high for any single finding
作者指出：近期的研究顯示，單節螺旋ct可以對闌尾穿孔的診斷有一定作用，但其準確性一直不盡如人意。New york ( reuters health ) jan 03 - multidetector row helical ct allows an accurate diagnosis of appendiceal perforation by imaging a defect in the contrast - enhanced appendiceal wall, according to a report in the january 2008 issue of radiology
紐約（路透通訊社健康版） 1月3日訊來自2008年1月出版的《放射學》的報道多排螺旋ct通過對比增強模擬闌尾壁的缺損，可以準確診斷闌尾穿孔。Considering the influence of high evanescent modes, we have obtained the common theory. by the comparing between theoretical calculation and experimental data, we found the theory can accurately describe the high - frequency characteristic of this kind of slow - wave helical groove structure. then, five representative shapes are chosen and researched particularly ( triangle shape, cosine shape, trapezoid shape, rectangular shape and swallow - tailed shape )
主要工作成果和創新之處在於: 1 .通過考慮高次模式的影響，獲得了一種更為精確分析任意槽形螺旋槽結構的普遍理論，經與實驗測量值比較，發現它更能準確可靠地描述此類螺旋慢波結構的高頻特性，然後詳細研究了五種槽形狀（三角形槽、餘弦形槽、梯形槽、矩形槽和燕尾形槽）對螺旋槽慢波系統導波特性的影響。When the propeller operates in the spatially non - uniform velocity field behind the ship, the unsteady cavitation on the blades often causes the vibration of ship structure, the propeller noise and the cavitation erosion on the blade
在船尾非均勻流場中工作的螺旋槳，常常由於槳葉上產生了非定常空泡，導致船尾振動和螺旋槳噪聲，致使槳葉表面出現空泡剝蝕。( c ) for the helical swallow - tailed structures with same groove width, the deep groove depth one which is suitable for the use in a interaction system of high power twts, has the largest coupling impedance and the lowest phase velocity in comparison with the other different groove profiles
（ 3 ）具有相同槽日寬度的燕尾形螺旋槽結構在槽深度較深情況下用作大功率行波管的互作用系統具有最大的耦合阻抗和最低的相速。The low - frequency discrete noise of the propeller is induced by the interaction between blades of the propeller and wake of the marine, and the low - frequency broadband noise of the propeller is produced by the interaction of blades and turbulent field of the marine stern
螺旋槳的低頻離散譜噪聲是由船尾伴流場和葉片的相互作用引起的，而低頻寬帶噪聲是由船尾粘性湍流場和葉片的相互作用產生的。Their maneuvering and control systems are made up of several propellers. this system has many disadvantages such as big volume, high consuming of energy, low total efficiency, high noise and vortex
它們使用的操縱和控制系統大多是由多個螺旋槳推進器組成的，這樣的系統體積大、重量大、能耗高、綜合效率低，並有較大的噪音和尾渦。分享友人