我国液压技术方面的名词术语，几乎全都来自国外资料的对译：其中绝大多数简洁明了、通顺贴切，“泵”、“阀”、“伺服”……等更是意义兼顾、易懂易记；也确有词义含混，取名不当的败笔，给初学者带来困惑。基本术语中的“方向阀”便是词义含混的典型例子。顾名思义，“方向 Most of the terminology used in hydraulic technology in our country comes from the translation of foreign materials: most of them are concise and concise, and the words “pump,” “valve,” and “servo” are more meaningful and easy to understand ; There are indeed vague meaning, named an unsuccessful failure, for beginners confused. The basic term “directional valve” is a typical example of vague meaning. As the name suggests, "the direction