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Ectoprocta    
外肛亚门

外肛亚门

Ectoprocta
n 1: coextensive with or a subphylum of Bryozoa [synonym:
{Ectoprocta}, {phylum Ectoprocta}]


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英文字典中文字典相关资料:


  • Drag coefficient - Wikipedia
    It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag The drag coefficient is always associated with a particular surface area
  • Drag Coefficient - The Engineering ToolBox
    The drag coefficient quantifies the drag or resistance of an object in a fluid environment Any object moving through a fluid experiences drag - the net force in the direction of flow due to pressure and shear stress forces on the surface of the object The drag force can be expressed as: Fd = cd 1 2 ρ v2 A (1) where
  • Drag Coefficient - Glenn Research Center | NASA
    This equation is simply a rearrangement of the drag equation where we solve for the drag coefficient in terms of the other variables The drag coefficient Cd is equal to the drag D divided by the quantity: density ρ times half the velocity V squared times the reference area A
  • 3. 5. 7: The Coefficient of Drag - Mathematics LibreTexts
    We have seen that air drag can play a role in interesting physics problems in differential equations This also is an important concept in fluid flow and fluid mechanics when looking at flows around obstacles, or when the obstacle is moving with respect to the background fluid
  • What is the coefficient of drag, and how is it calculated?
    It is calculated using the formula: Cd = (2 × Drag Force) (Fluid Density × Velocity² × Area) This value helps engineers compare different shapes and designs to reduce drag and improve stability and efficiency in civil structures like buildings, bridges, and towers
  • Air Flow Drag Coefficient Equations and Calculator
    The drag coefficient (non-dimensional drag) is equal to the drag force divided by the product of velocity pressure and frontal area The velocity may be that of the object through the air (or any other gas) or the air velocity past a stationary object
  • Drag and Drag Coefficient
    The following figure shows a typical drag variation for a supersonic aircraft plotted against Mach number To get performance results in this case, experimental or flight test data or complex CFD analysis would be required
  • Drag Coefficient. PDF - braeunig. us
    For rockets, CD is typically based on the rocket’s maximum cross-section area Most rockets are circular in cross-section, therefore its cross-section area is described by the equation for an area of a circle In general, the equation for drag ‘D’ is given by: = qC A = qC p 2
  • Drag Force Equation Calculator
    Definition: The drag force equation calculates the resistance force experienced by an object moving through a fluid (like air or water) Purpose: It helps engineers and physicists determine the aerodynamic or hydrodynamic forces acting on objects in motion
  • Drag equation - Wikipedia
    The drag coefficient is defined in combination with the choice of reference area and captures both skin friction and form drag If the fluid is a liquid, depends on the Reynolds number; if the fluid is a gas, depends on both the Reynolds number and the Mach number





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