The adjustment method of feed aperture position in radar antenna and location mode of the feed aperture are analysed by taking two kinds of radar antenna as example in this paper.

The two works are similar in theme, lyricism in style and low emotion, and they are different in the position of narration, narrative mode and the meaning of the work.

For a single mode light, two dimensionless quadrature operators are defined which are proportional to the usual position and momentum operators respectively.