过去,试油用的抽子的金属骨架,通常埋在胶碗的弹性胶料当中。这种结构的抽子胶碗,沿着弹性胶料的外表面容易磨损,使用寿命短。本文介绍的抽子胶碗,没有上述抽子胶碗所存在的缺点。它采用一个金属骨架构成抽子胶碗外表面的大部,形成一个比较硬的金属表面,比以前的抽子胶碗耐磨得多。 In the past, the pocketed metal skeleton used for test oil was usually buried in a plastic bowl of elastic compound. This structure of pumping plastic bowls, along the outer surface of the elastic rubber easy to wear and short life. This article describes the pumping gum bowl, there is no such drawbacks of the pumping gum bowl. It uses a metal skeleton to form the majority of the outer surface of the capsule and forms a relatively hard metal surface that is much more wear resistant than previous pallets.