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
accurate appraisal value
achievement appraisal index
anomaly appraisal and ore prospecting
anomaly ecological appraisal
application effect appraisal