提出未确知有理数用于施工网络计划，介绍未确知有理数概念、运算、未确知期望。

Putting forward using unascertained rational number to construction network, this paper also introduced the conception and operation of unascertained rational number and unascertained expectation.

youdao

提出未确知有理数用于施工网络计划，介绍未确知有理数概念、运算、未确知期望。

Putting forward using unascertained rational number to construction network, this paper also introduced the conception and operation of unascertained rational number and unascertained expectation.

youdao