Rings like this can form as an aircraft traveling low over the water nears the speed of sound.
当飞机在水面上以接近音速的速度飞行时就有可能产生这样的圆环。
While many aircraft designs often boast a low stall speed, many of these same designs have minimal control effectiveness at these lower speeds.
虽然许多飞机设计往往拥有低失速速度，设计许多这些同样具有这些低效益的速度，最低程度的控制。
The F-35C, designed for the US Navy, features larger wings to carry more fuel and provide better low-speed landing approach characteristics to an aircraft carrier.
F - 35c是专为美国海军设计的，采用了更大的机翼以携带更多的燃油并保证在航空母舰上更好的低速降落进场特性。
Only small aircraft, and those needing tough low-speed propulsion at low altitudes, for agricultural work and fire-fighting, still have piston engines.
只有一些小型的飞机，以及那些用于在低空低速爬升飞行的用于农业以及灭火用途的飞机仍然使用活塞发动机。
The results of flight test show that JL8 aircraft has very good characteristics of high Angle of attack, low speed and high speed stalls.
试飞结果表明，JL8飞机具有良好的大迎角特性及低速和高速失速特性。
The configuration also provides acoustic shielding and, at low speed, increases aircraft lift without a thrust or drag penalty.
该构造还提供声屏蔽，并且在低速下，增加飞机升力的同时没有推力或阻力损失。
In order to study dynamic stall phenomena of an aircraft in portrait at a high Angle of attack, designing a measuring device of heave oscillation for a low speed wind tunnel.
为了研究飞行器在纵向大迎角状态下的动态失速现象，设计了一套用于低速风洞的升沉振动测量装置。
High-speed aircraft usually employ thin, low-drag, low-lift airfoils; slow aircraft that carry heavy loads use thicker airfoils with high drag and high lift.
高速飞机通常采用低阻力、低升力的流线型薄翼型，载重量大的低速飞机使用高阻力、高升力的厚翼型。
An aircraft model was tested in the FL-8 low speed wind tunnel. The test data were analyzed.
在FL - 8风洞中采用某型号飞机的动导模型进行了旋转流场下滚转振荡试验研究，对试验数据进行简单分析。
The aircraft with high accuracy, high speed, low noise characteristics, can be carried out on flat glass cutting a straight line and contour.
该机具有高精度、高速度、低噪音的特点，可对平板玻璃进行直线和异形切割。
The aircraft with high accuracy, high speed, low noise characteristics, can be carried out on flat glass cutting a straight line and contour.
该机具有高精度、高速度、低噪音的特点，可对平板玻璃进行直线和异形切割。
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