The vacuum-though shaft eliminates common dust problems in pick and place applications. Upgraded LAR31 series of linear and rotary actuator improves performance and reliability in PCB assembly.是什么意思_The vacuum-though shaft eliminates common dust problems in pick and place applications. Upgraded LAR31 series of linear and rotary actuator improves performance and reliability in PCB assembly.在线翻译_英语_读音_用法_例句