“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	Sahelanthoropus tchadensis Sahelanthropus Toumaï Sahel-Benin Union Sahitya Akademi Sahitya Akademi Award Sahle Sellassie Sa Hsiao SAI Sai Saibei SAIC Saicho Saichō SAID Saida Said Ahmad Saidpur Said-Salim Treaty Saidun SAIF Saigusa Hiroto Saigyo Saihan Qu Saihantala wetland grassland Saihanwula national nature reserve

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。