“directional valve”的概念、定义、翻译、参考文献-科学参考

单词	directional valve
释义	directional valve Encyclopedia 工学方向控制阀释 directional valve换向阀借助于改变阀芯的位置，来实现与阀体相连的几个油路之间的接通或断开的阀类。
随便看	congruence congruence arithmetic congruence axiom congruence by dissection congruence by ideal congruence class congruence-distributive algebra congruence distributivity congruence equation congruence-free condition congruence-free semigroup congruence function congruence group congruence in many variables congruence kernel congruence kernel of a homomorphism congruence lattice congruence method congruence-modular algebra congruence modularity congruence modulo a double modulus congruence modulo a prime congruence of angles congruence of conics congruence of curves

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