collision theory hard sphere theory
hard sphere theory collision theory
lipoid-sieve theory lipoid-filter theory
TRIZ theory of inventive problem solving theory
TRIZ发明问题解决理论理论
TRIZ理论发明问题解决理论
early period of origination
initial stage of origination
Origination
起源
发端
成因
形成
根谱
创始
开始
出现
原始位置
机理
发源
产生
起源地
原始起点
Origination and evolution
cannibalism translation theory
Changing the Bones Theory
country losing the weight theory
criticizing works theory