derivation

n.

引出，导出；衍生，衍生物；[语]词源，派生；出处，由来，起源

复数：derivations

theoretical derivation理论推导

1. As in Arabic and Hebrew, Esperanto makes up most of its vocabulary through derivation from invariable roots.
   同阿拉伯语和希伯来语一样，世界语通过在不变的词根上派生出大多数的词汇。
2. Every sentence has a canonical derivation.
   每个句子都有一个规范推导。
3. Our derivation lacks rigour in this regard.
   我们的推导在这方面是不严格的。
4. The derivation of the poem isn't confirmed.
   这首诗出处不详。
5. The custom is of Scottish derivation.
   这种风俗起源于苏格兰。

Derivation by phase
Derivation of pluripotent epiblast stem cells from mammalian embryos.
Derivation of pluripotent stem cells from cultured human primordial germ cells
Derivation of some modern arc magmas by melting of young subducted lithosphere
Derivation of pluripotential embryonic stem cells from murine primordial germ cells in culture.
Derivation and prospective validation of a simple index for prediction of cardiac risk of major noncardiac surgery
Derivation of pluripotent stem cells from cultured human primordial germ cells [published erratum appears in Proc Natl Acad Sci U S ...
Functional dissection of the HIV-1 Rev trans-activator--derivation of a trans-dominant repressor of Rev function.
Predicting Mortality Among Patients Hospitalized for Heart Failure: Derivation and Validation of a Clinical Model
Defining community acquired pneumonia severity on presentation to hospital: an international derivation and validation study