单词	十字指针
释义	十字指针cross hairs
随便看	gradient interest factor gradient interferometer gradientless contactor gradientless reactor gradient lines gradient liquid chromatography gradient magnetic field gradient magnetic field coil gradient mapping gradient matrix gradient meter gradient method gradient methods gradient microphone gradient mold gradient of approach gradient of avoidance gradient of determinant gradient of disparity gradient of electrochemical potential gradient of equal traction gradient of gravity gradient of motivation gradient of neutrons gradient of position line