optical libration 几何平动 ; [天] 光学天平动
libration period 天平动周期
libration in latitude [天] 纬天平动 ; 纬秤动
libration in longitude [天] 经天平动 ; 经秤动
true libration [天] 真天平动
apparent libration [天] 视天平动
parallactic libration [天] 视差天平动
In succession, the author educed movement differential equation of reed valve plate from differential element of the plate according to theory of elastic plate libration.
接着本文根据弹性薄板振动理论,由薄板的微元体导出簧片阀阀片的运动微分方程。
参考来源 - EQ1141G型汽车空压机簧片阀工作特性的研究In this paper, based on researchful demand for one type satellite antenna, go deep into studying on deployable dynamics and flexible-distorted control, which would give well technical base to libration and stable expandedness during the outspread process of HTDA.
本文依据某在研卫星天线研制工作的需要,针对环形可展天线进行了展开动力学分析与展开过程智能控制研究,为减小天线展开过程中的振动和平稳展开提供了技术支撑。
参考来源 - 环形可展开天线展开动力学分析及智能控制研究·2,447,543篇论文数据，部分数据来源于NoteExpress
"the libration of the moon"
以上来源于: WordNet
N the act or an instance of oscillating 摆动
This paper analyzes some kinds of methods for voltage reference self-ca libration system and explains them one by one.
对几种电压标准自校系统方法进行了分析探讨，并对它们逐个作了研究说明。
Varying regularity of libration period on overweighted compound pendulum was obtained by theoretical reasoning? Research and analysis.
通过理论推导、研究和分析，得出了加配重复摆振动周期的变化规律。
Libration point orbits have the important applications in deep space exploration, and have been paid more attentions from all over the world.
平动点轨道在深空探测领域具有重要的应用价值，引起了国内外航天界的密切关注。
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