Page 37 - The 40 Ch. Book by James Hong or 洪祥智

James H Hong To#5 Navier Stokes Equation: In the first

equation: Me:A:g is the downward acceleration of the weight
under the y-axis, what is the x-axis flow? What direction of flow
acceleration is Du / Dt? Usually the fluid is supported by the

base. B: The direction of acceleration caused by pressure is
unknown. C: Cauchy momentum equation is not a momentum

equation; it is a pressure equation. D: linear stress constitutive
equation, strain (du) = 1/2 (du) + 1/2 (duT) is a very doubtful,

maybe wrong.

To#4 or #6; Yang-Mills existence and quality gap: I: So the glue
is either quality or quality; assuming the quality gap says it has
both quality and quality. Make a mistake? B: I recommend

experimenting