angle of nutationnutational angle章动: nutation; nodding角: role; part; character章动: [天文学] nutation; nodding 黄经章动 nutation in longitude; 倾角章动 nutation in obliquity; 章动传动 nutation drive; 章动轮 nutation wheel; 章动器 nutator; 章动轴 nutation shaft; 章动子 nutator 章动轮: nutation wheel章动器: nutator下载手机词典可随时随地查词查翻译