同时，还进一步阐明了数学概念的兼容性、非兼容性和反变性。
In the meantime, I further elucidated the compatibility, incompatibility and contravariance of the mathematical concept.
本发明提供一种使双酚类和芳烷基酚醛树脂的混合物与环氧卤丙烷反 应得到的低粘度且高性能的变性液性环氧树脂。
Disclosed is a modified liquid epoxy resin having low viscosity and high performance, which is obtained by reacting a mixture of a bisphenol and a phenol aralkyl resin with an epihalohydrin.
反胶束萃取技术具有条件温和，萃取效率高，成本低，溶剂可重复利用，不引起萃取物变性等优点，用于纯化生物物质前景广阔。
The use of reversed micelle in extraction of biological molecules has the advantages of mild operational conditions, high extraction efficiency, low cost and solvent recycling.
反胶束萃取技术具有条件温和，萃取效率高，成本低，溶剂可重复利用，不引起萃取物变性等优点，用于纯化生物物质前景广阔。
It has a promising profit that extraction of biological molecule by reversed micellar, for the more mild operational condition, higher extraction yield, lower cost and solvent recycling.
本文结合波导不变性和时反海底混响零点设置方法，提出了一种利用波导不变性实现时反混响零点展宽的方法。
Combined the waveguide invariant and the time reversal reverberation hulling, a time reversal bottom reverberation null-broadening method is proposed.
触变性和反触变性是由大分子天生缠结与非天生缠结机理所致；
The results showed that PAN/DMSO solution showed anti-thixotropy lower than thixotropy, which resulted from the mechanism of inborn and uninborn entanglements.
触变性和反触变性是由大分子天生缠结与非天生缠结机理所致；
The results showed that PAN/DMSO solution showed anti-thixotropy lower than thixotropy, which resulted from the mechanism of inborn and uninborn entanglements.
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