一个技术难题是气穴现象，一旦发生气穴现象，位于旋转螺旋桨叶后方的低压会产生气泡。
One technical difficulty is cavitation, where low pressure behind a turning blade causes air bubbles.
每秒几百公里的旋转速度可能使圆盘里的物质呈现象宇宙玩具风车一样独特的螺旋形。
This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a distinctive spiral shape like a cosmic pinwheel.
现在能避免20世纪70年代出现的工资物价螺旋上涨现象，但收入冲击仍然非常痛苦。
The wage-price spiral of the 1970s has been avoided, but the income shock is painful.
月球引起了每个白天的潮汐，同时也给自己带来了副作用——它正沿着螺旋状轨迹慢慢的远离地球。这个可以用岩石和化石上的线索加以证明的现象，昭示了这颗卫星最初和最终的命运。
The moon is slowly spiraling away from Earth as it drives day-stretching tides, a phenomenon recorded in rocks and fossils that provides clues to the satellite's origin and ultimate fate.
齐塔人是否可以证实，在全世界的山区找到的螺旋形的岩石画就是描绘了人们目击到的一些现象，比如我们这个时代出现过的挪威螺旋呢？
Can the Zeta's confirm if the spiral petroglyphs found in mountainous areas all over the world are depicting phenomena people witnessed such as the Norway spiral in our own time?
这种螺旋形状是很特殊的，肯定不会是某种极光现象的变种。
This spiral shape is unique. It is definitely not a variation of the aurora borealis - northern lights.
螺旋槽成形铣削时普遍存在根切现象，在很大程度上影响到加工精度和几何形状。
Usually, there exist undercutting phenomena in helical groove milling process, which affect the accuracy and geometrical shape greatly.
上述螺旋式上升的教学模式，可以避免教学形成模式后的僵化现象。
The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.
在钙电导率按行波方式变化下，观察到时空混沌转变成螺旋波的现象，对控制机制作了简要讨论。
The phenomenon that the modulated calcium conductivity transforms spatiotemporal chaos into spiral wave is observed. The control mechanism is briefly discussed.
采用高强度级别钢种的卷板制造螺旋焊管的过程中，包申格效应使钢管屈服强度降低的现象日益突出。
In the process of using high strength steel to produce spirally welded pipe, the yield strength is reduced due to Bauschinger's effect.
螺旋桨不会生锈但是会因为螺旋桨的空泡现象，对螺旋桨照成严重的侵蚀。
Whilecopper propeller does not rust, it also can be eroded seriously by cavitation.
主要检查各碰撞传感器的固定是否牢固，搭铁线部位是否清洁、连接是否可靠，转向盘转动时是否有卡滞现象，以判断转向盘内的SRS螺旋电缆是否完好；
Check the main collision sensor is fixed, the strap part is clean, the connection is reliable, whether the hysteresis phenomenon card of steering wheel, steering to determine SRS cable tray is intact;
采用了一个修正的螺旋桨尾涡模型，来模拟导管螺旋桨尾涡片的扭曲变形及分离现象。
A modified trailing vortex wake model of propeller is introduced to describe the distortion and separation of the trailing vortex sheet.
从一个过冷度工况向另一个过冷度工况转变的过程中存在螺旋管毛细管入口处压力的波动，并对此现象作了简要分析。
Also, it is found and analysed that there exists inlet pressure fluctuation of coiled capillary tubes when the degree of subcooling is changed from one to another.
试验所获得的定量信息为螺旋桨尾流场复杂流动现象的揭示提供了帮助。
The information form the experimental studies could be helpful for the research of the complex flow around Marine propeller.
在网络时代，“沉默螺旋”理论明显地表现出局限性，网络传播出现一种新的态势，即“反沉默螺旋”现象。
In the network era, "the spiral of silence" obviously displays its limitations. Network communication gives rise to a new situation, namely the phenomenon of "anti-silence spiral".
结果：对运动学评价，分析了运动单元的旋转、耦合现象和三维运动螺旋轴。
Results. For kinematic evaluation, the rotation of motion segment unit, coupling behaviors, and 3-dimensional helical axes of motion were analyzed.
介绍了螺旋焊管生产中对头焊带钢的硬弯现象发生原因，对钢管质量的危害及防止措施。
The discussion involves such aspects as the cause of strip folding occurring in butt-welding process of spiral weld pipe, negative influence by such failure on pipe quality and preventive actions.
研究密螺旋体的基因序列和双组分调控系统可能为解释上述现象提供了理论依据。
Studying the gene sequence of treponema and twocomponent regulatory systems may provide the theoretical basis for explaining the above phenomena.
针对发生流体弹性不稳定现象时的临界流速；不同螺旋半径上相邻管的相互影响；同一螺旋半径上、下游管的相互影响等问题作了讨论。
The problem such as the critical flow velocity at which fluid elastic instability phenomenon begin to occur, the reciprocal action on neighboring tubes in different helical radius, and that.
本文从泵的角度对螺旋密封“气吞”及“密封失效”现象作出了合理、全面的解释，并提出一种新型组合螺旋密封。
In this paper, based on the work mechanism of the flow pump, gas ingestion and failure of helical seal are fully explained. Moreover, a new type of combined helical seal is put forward.
对吹塑薄膜平面螺旋式模头内熔体流动现象进行了三维数值模拟。
The melt flow phenomenon of flat spiral type die had been studied by 3d numerical simulation.
对吹塑薄膜平面螺旋式模头内熔体流动现象进行了三维数值模拟。
The melt flow phenomenon of flat spiral type die had been studied by 3d numerical simulation.
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