How many different types of grey number are there?
A、Greynumberswithonlyalowerbound.;
B、Greynumberswithonlyanupperbound.;
C、Intervalgreynumber.;
D、Continuousanddiscretegreynumbers.;
E、Blackandwhitenumbers.;
F、Essentialandnon-essentialgreynumbers.
发布时间：2024-09-07 04:14:35
