derivation是什么意思

双语用例

• This reuse permits the effort required to develop sets of transformations to be amortized over a large number of derivations.

• Obtaining robustness for a discourse parser is a demanding task due to the many unresolved theoretical issues regarding the derivation of the discourse structure.

• Is it possible to give a more straightforward derivation of the solution?

• The derivation of the algorithms is also clear and straightforward.

• The usual technique for analysing the problem defined above starts with the derivation of a single equation for the vertical velocity component.

• This is the only case in which a subtyping derivation not containing promotion relates two types that are not -equal.

• Nevertheless, their derivation of implicatures is still poor : weak statements are rejected only about half of the time.

• Derivation and safety of an abstract unification algorithm for groundness and aliasing analysis.