铣床上的电动机都是全封闭的，以防止金属粉尘进入。
Motors on the milling machines are totally enclosed to guard against ingress of metallic dust.
作者在自研的精密铣床上，进行了微小复杂形面零件的切削加工实验，对用精密铣削技术加工三维微细金属零件工艺进行了较深入的研究。
The author machines complex shape microminiature parts on a precision milling machine developed by themselves, and study the machining technique of three dimension complex shape metal parts.
X5032立式铣床：立式铣床是一种通用金属切削机床。
X5032 vertical milling machine: vertical milling machine is a kind of common metal cutting machine tools.
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