valve tubes

英 [vælv tjuːbz] 美 [vælv tubz]

网络  真空整流管

医学



双语例句

  1. Inside the solenoid valve, there is an airtight cavity perforated with holes which lead to different fuel tubes in different positions.
    电磁阀的内部有密闭的腔,在不同位置开有通孔,每个孔都通向不同的油管。