例句與造句

1. The nomenclature of the positions'names is somewhat esoteric, but roughly follow a system of polar coordinates  one word ( leg, cover, mid-wicket ) specifies the angle from the batsman, and is optionally preceded by an adjective describing the distance from the batsman ( silly, short, deep or long ).
2. This more general context makes clear the correspondence between the concepts of centrifugal force in rotating coordinate systems and in stationary curvilinear coordinate systems . ( Both of these concepts appear frequently in the literature . ) For a simple example, consider a particle of mass " m " moving in a circle of radius " r " with angular speed " w " relative to a system of polar coordinates rotating with angular speed " W ".
3. It's difficult to find system of polar coordinates in a sentence. 用system of polar coordinates造句挺難的