“head of hydraulic turbine”的概念、定义、翻译、参考文献-科学参考

单词	head of hydraulic turbine
释义	head of hydraulic turbine Encyclopedia 工学水轮机水头释 head of hydraulic turbine水轮机水头水轮机进口断面和出口断面的单位质量（或体积）介质能量的差值，一般用表示。
随便看	positive linear functional positive linear operator positive link positive literal positive logic positive logical calculus positive logical formula positive lossless storage positively definite positively definite form positively definite kernel positively definite matrix positively definite quadratic form positively graded module positively invariant subspace positively oriented base positively semi-definite positively stable point positively stable solution positive manifold positive map positive mapping positive mass conjecture positive matrix positive measure

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