“interaction between pantographs and overhead contact line”的概念、定义、翻译、参考文献-科学参考

单词	interaction between pantographs and overhead contact line
释义	interaction between pantographs and overhead contact line Encyclopedia 工学接触网释 interaction between pantographs and overhead contact line弓网相互作用受电弓与接触网之间以滑动电接触为主的在空间与时间上的耦合关系。
随便看	positive definite Hermitian matrix positive definite inner product axiom positive definite kernel positive definite matrix positive definiteness positive definite operator positive definite potential positive definite product positive definite quadratic form positive definite scalar product positive definite sequence positive definite solution positive definite space positive definite tensor positive definte rational fanction positive deviation positive diffeomorphism positive diffeomorphisms positive differential positive direction positive displacement compressor positive displacement flowmeter positive displacement motor drill positive displacement pump positive displacement sensor

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