哈他瑜伽体式之一，是常见的瑜伽体式。这瑜伽姿势伸展两腿腿肚子、腘旁腱和手臂的肌肉，补养和增强上背部和肩膀的肌肉群。它也有助于发展颈项和胸部。
ee)40铲斗式(The scraper bowl pose)41下蹲起立式(The squat and rise)41双角式(The double angle)42 转腰式 ( The waist rotating )42 扭脊式(The spinal twist)43三角侧屈式(The triangle side bending)43三角屈体式(The trian...
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20是一款可规避雷达的喷气式飞机，拥有与五角大楼的隐形飞机F - 22“猛禽”一样的标志型双v型垂直尾翼。
It is the J-20, a radar-evading jet fighter that has the same two angled tailfins that are the trademark of the Pentagon's own stealth fighter, the F-22 Raptor.
舵叶为半平衡式双板流线型结构，可分别向左右回转350舵角。
The rudder blade is semi-balance, double plate, stream-line type. Able to turn to 350 rudder Angle at port and starboard side.
另外用代数多项式和双正弦级数组成的解来满足角点条件。
Moreover, the solution composed by algebraic polynomial with double sine series is used to satisfy the corner conditions.
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