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请教Pipe spool 是什么意思
pipe spool 翻译：短管；管段; The characteristics of the hydraulic pipe orifice and spool valve under different conditions have been studied by numerical analysis.对不同条件下液压阀节流孔口和滑阀的性能进行了仿真研究。
ear spool of copper and silver 这儿的spool是什么意思，是耳环么
spool是跟前面的ear合在一起理解的ear spool 英文定义就是An ornament worn in the ear lobe, sometimes of such weight that the ear might be stretched to shoulder-length.就是石头做的耳朵上戴的装饰物，可以理解成石头耳环。spool本身的意思名词 n. I bought three spools of thread at the store. 我在这个店里买了三轴线。及物动词 vt. 1.将(线等)卷在线轴(卷轴)上;缠绕
