There is a correlation between accumulated water production rate and accumulated oil production rate, which is a linear relation on semilog coordinate.
In the research of primary spectrum pyrometry, this paper discussed the definition problem of radiation temperature measurement area based on the measurement coordinates.
The data measured by coordinate measuring machine can not been used directly for reverse elu gineering by general-purpose CAD software because of its litteriness。
In the engineering survey in current electric power, several kinds of coordinate system and elevation in common use and their mutual matrixing relation are introduced.
According to the plane coordinate in each image, buccolingual direction was presented as X axis, mesial-distal direction as Y axis and occlusogingival direction as Z axis.
By using the method of coordination transformation and expandedness Fourier series, an analytic solution is obtained from studying the Newtonian fluids laminar flow in eccentric anulus.
A hail cloud model that is two dimensional elastic non-hydrostatic, uses a terrain-following coordinate system and includes double parameters for ice phase microphysics, has been developed.