gradient of pressure造句

The thermosphere in this range has large gradients of pressure, temperature and composition, and varies greatly due to space weather.
When this condition of 0 } } is applied to the Navier-Stokes equation, the gradient of pressure becomes a function of body forces only.
It's the gradient of pressure that can do harm and the external pressure will be equal to the internal pressure-zero gradient-no harm.
Commonly, in wells tapping unconfined aquifers the water level in a well is used as a proxy for hydraulic head, assuming there is no vertical gradient of pressure.
Note that if the cross differentiation is left out, the result is a third order vector equation containing an unknown vector field ( the gradient of pressure ) that may be determined from the same boundary conditions that one would apply to the fourth order equation above.
It's difficult to find gradient of pressure in a sentence. 用gradient of pressure造句挺难的