矩形键 meaning in English

square key

Agent specific filling systems for anaesthetic vaporizers - rectangular keyed filling systems
麻醉气化装置的制剂填充专用系统.矩形键控填充系统
Square and rectangular keys and keyways - width tolerances and deviations greater than basic size
方形和矩形键和键槽.宽度公差和大于基本尺寸的偏差
Agent specific filling systems for anaesthetic vaporizers - part 1 : rectangular keyed filling systems
麻醉汽化器专用试剂灌充装置.第1部分:矩形键控灌充装置
Agent specific filling systems for anaesthetic vaporizers - part 1 : rectangular keyed filling systems includes amendment a1 : 2000 ; german version en 1280 - 1 : 1997 a1 : 2000
麻醉药品蒸发器用药剂专用填充装置.第1部分:矩形键码