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单词
Lunar Laser Ranging
释义
Lunar Laser Ranging
Encyclopedia
理学
激光测卫
释
Lunar Laser Ranging
月球激光测距
地面测站上的发射望远镜向月球发射脉冲激光,经过月球表面上的光学四面体棱镜即后向反射器的反射,激光回波沿原路径返回到达地面上的接收望远镜,通过测定激光往返所需的时间,乘以光速便得到地月之间的距离的技术。简称LLR。
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unilluminated hemisphere
unilocular fat
unilocular sporangium
uni-male group
unimodal
unimodal distribution
unimodal distribution function
unimodal frequency curve
unimodal function
unimodality
unimodality of a sequence
unimodality problem
unimodal mapping
unimodal probability distribution
unimodal sequence
unimodal singularity
unimodular
unimodular affine transformation
unimodular affine transformation; equiaffine transformation
unimodular congruence
unimodular determinant
unimodular element
unimodular form
unimodular germ
unimodular group
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