Their properties are better than those of metal-impregnated graphite sealing materials and their lifetime is increased by 4-6 times compared with the latter.
与金属浸渍石墨密封材料相比，其性能更为优良，使用寿命提高4—6倍。
Their properties are better than those of metal-impregnated graphite sealing materials and their lifetime is increased by 4-6 times compared with the latter.
与金属浸渍石墨密封材料相比，其性能更为优良，使用寿命提高4—6倍。
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