“hydraulic support”的概念、定义、翻译、参考文献-科学参考

单词	hydraulic support
释义	hydraulic support Encyclopedia 工学煤岩支护机械释 hydraulic support液压支架以液压为动力实现升降、前移等运动，既能支撑又能维护顶板的支护设备。是采煤工作面机械化的主要设备。
随便看	positive real system positive recurrent point positive recurrent state positive reinforcement positive relation positive result positive root positive root system positive rotation positive school of criminology positive selection positive self-adjoint operator positive self-regard positive semi-definite positive semi-definite form positive semi definite Hermitian matrix positive semi-definite Hermitian matrix positive semi-definite kernel positive semi definite matrix positive semi-definite matrix positive semi-definite operator positive semi definite quadratic form positive semi-definite quadratic form positive semi-definite rational function positive semigroup

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