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rubber seal
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rubber seal
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工学
橡胶密封制品
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rubber seal
橡胶密封制品
防止流体介质从密封的机构中漏出,或防止外来的灰尘、泥沙和空气等物质进入被密封机构的橡胶制品。包括橡胶密封圈、垫和隔膜等。
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lithiasis of salivary glands
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lithic community
Lithic contact and paralithic contact
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lithium aluminum hydride
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