All physical - properties of the vulcanizate achieved the property requirements of oil pump bushing according to the petroleum and natural gas industry standards (SY5549 - 92) at home.
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释义
硫化胶的各项物理机械性能均达到我国石油天然气行业标准(SY5549-92)中抽油泵村套橡胶性能要求。
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