Plunger head chute different location, change the amount of oil in a different manner.
柱塞头部斜槽的位置不同，改变供油量的方法也不同。
A protrusion (56) forming a ridge is disposed on one of the roof of the barrel and the plunger head.
形成脊的突起(56)设在注射筒顶部和柱塞头中的一个上。
Nozzle, gooes neck, injection plunger head and melting pot sleeve are made from hot work steel from Germany, so their life spans are long.
射咀、鹅头、压射头及料壶司筒采用德国优质热作钢制造，使用用寿命长；
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