The umbrella shaped cover is one of the fixed tank covers, which is characterized between the conical cover and the arch cover .
伞顶是介于锥顶与拱顶之间一种固定式罐顶结构形式。
Furthermore, the umbrella-shaped protective cover is made from ceramic and can not age easily, has long service life and low cost, and is applicable to industrial production and practical demands.
另外，伞形护罩采用陶瓷制成，不易老化，使用寿命长且价格低廉，适用 于工业的生产和实际的需要。
Furthermore, the umbrella-shaped protective cover is made from ceramic and can not age easily, has long service life and low cost, and is applicable to industrial production and practical demands.
另外，伞形护罩采用陶瓷制成，不易老化，使用寿命长且价格低廉，适用 于工业的生产和实际的需要。
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