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填料密封
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填料密封
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往复密封
释
packing box seal
填料密封
通过填料阻塞泄漏通路实现往复或旋转相对运动界面的密封。又称压紧填料密封。
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microbial insecticide
microbial insecticides
microbial interactions
microbial iron transformation
microbial limit test of drug
microbial loop
microbial magnetotaxis
microbial manganese transformation
microbial manure
microbial mats
microbial mercury transformation
microbial metabolite insecticides
microbial metabolome
microbial metagenome
microbial metallurgy
microbial metaproteome
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microbial microevolution
microbial nitrogen assimilation
microbial nitrogen transformation
microbial nutrient elements
microbial nutrition
microbial organic fertilizer
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