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数学函数
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数学函数
两个集合间的一种二元关系,使得第一个集合中的任一元素都关联至第二个集合中的单一元素。又称映射。
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sealing channeling by bullheading
sealing channeling by circulation method
sealing channeling by cycle into
sealing channeling by filling in the slurry
sealing-clay inscriptions
sealing fan
sealing fluid
sealing glass
sealing material
sealing material with special media resistance
sealing off channel
sealing structure
sealing technique of vacuum electronic device
sealing up
seal inscriptions
seal memorial to the throne
seal mineral material
seal of chairman of China Civil Rights Protection League
seal of compressor
Seal of Empress
Seal of Imperial Concubine Li
Seal of Imperial Concubine Shao
Seal of the Central Executive Committee of the Soviet Republic of China
seal pressure control system
sealprint examination
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