工作台高度 meaning in English

bench height
stage level

Work table height
工作台高度：
Machine tools ; vertical drilling machines ; single column coordinate drilling machines with vertical spindle and knee of variable height ; acceptance conditions
机床.立式钻床.工作台高度可调的单柱立式坐标钻床.验
Machine tools - test conditions for milling machines with table of variable height ; testing of accuracy - part 3 : machines with vertical spindle iso 1701 - 3 : 1997
机床.工作台高度可调的铣床试验条件.精度试验.第3部
Machine tools - test conditions for milling machines with table of variable height ; testing of accuracy - part 2 : machines with horizontal spindle iso 1701 - 2 : 1997
机床.工作台高度可调的铣床试验条件.精度试验.第2部