立式铣床主轴与工作台面的垂直度会影响孔的圆柱度。
The verticality of vertical milling machine spindle and the worktable can affect hole cylindricity.
立式内燃机的多个气缸垂直排成一排。
An inline engine arranges the cylinders vertically in a row.
分析了数控立式磨床垂直进给轴的机电动态特性，研究了伺服系统的速度环参数对伺服系统性能的影响。
Based on analyzing the dynamic characteristics of vertical servo motor of a NC vertical grinder, the effect of the parameters of speed loop on the servo system was studied.
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