Sealing scraper and the seal membrane cover the annular space between floating roof and the shell of tank in order to isolate effectively oil gas leaked by once sealing form the atmosphere.
英
美
释义
密封刮板、密封隔膜整条地覆盖于浮顶与罐壁的环形空间上,有效隔离了由一次密封逸出的油气与大气相通。
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