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空气压缩引火仪空气做功热能机械能初高中物理教学教具科教仪器

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    USD $4.26
    ≥2/piece
    USD $4.17
    ≥50/piece
    USD $4.09
    ≥100/piece
  • 2 piece
  • Item No. 22203
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    mixed batch(混批) USD $0.0 999 piece available
    Summary 0 piece Subtotal:USD $ 0 Selected ∧
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  • Description

备注:下单发货时 请联系确认(因现货实时变化)

空气压缩引火仪,包括连接在底座上的透明缸体,缸体中设有压杆,压杆的一端穿过盖与压帽相连,压杆的另一端固定有与缸体匹配的活塞,可上下活动的压杆与活塞的顶端相连,缸体上设置有穿过缸体的放料孔,缸体的底端设置有换气阀门.本实用新型的有益效果:由于管的上端开一个直径为5mm左右的放料孔,不用打开盖子,将活塞提到小孔位置这上,就能向小孔中投放铅皮裹着.....,多次实验后再将铅皮倒出即可,放料孔还能起到保证试验安全的作用,用的...稍多时,也只能听到放料孔泄气时的轻微爆破声,不再对盖造成冲击.undefined

Update time:20241104093415


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