紧闭子集集开子集
compactly closed subset compactly open subset
乘法封闭子集
Multiplicati vely closed subset
粒子数的守恒
conservation of particles
弦发射胶子的集体效应
collective effects in the gluon emission of string
相对星林德洛夫的子集
relative star-Lindelof subset
星形子集的正规结构
normal structure of a star-shaped set
中子数的涨落
neutron population fluctuation
子集的次极大理想
subset′s submaximum ideal
子集的局部有限族
sigma locally finite family of subsets
子集的离散族
sigma discrete family of subsets