"气吸式捡拾机" can be translated as "pneumatic suction-type picker" or "air-suction picking machine".
Pneumatic suction-type picker emphasizes the use of pneumatic (air-powered) suction for the picking action.
Air-suction picking machine is a more straightforward description, highlighting the air-suction mechanism used in the picking process.
Both translations are accurate and can be used depending on the context and the level of technicality desired.