便携式吸气装备
portable aspirating equipment
冲吸式吸砂泵
flushing and suction type pump of sand
固体推进剂吸气式涡轮火箭发动机
solid propellant air-turbo-rocket(SPATR
气吸式播种机
pneumatic planter
Suction drills
pneumatic seeder
Suction seeder
air-suction planting machine
气吸式精量播种机简述
The Introduction of the Air Suction Seeder
气吸式排种器
air-suction metering device
vacuum type seeder
Suction seeder
Air-suction seeder
pneumatic feed
suction-seed metering device
suction seed metering device
气吸式拾种机
air sucking type seed gatherer
气吸式卸船机
air suction-type ship unloader