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生态润滑剂
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生态润滑剂
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eco-lubricant
生态润滑剂
既能满足机械设备的使用要求,又能在较短时间内被活性微生物(细菌)降解为二氧化碳和水,本体及其耗损产物对生态环境不产生危害或在一定程度上为环境所容许的润滑剂。又称绿色润滑剂[注]。
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physical geography in historical time
physical geography of China
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physical hazards in aquatic foods
Physical health testing methods
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physical indices survey of water resources project
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physical inspection of ophthalmology
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physical libration of the Moon
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