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从事专利文献的收集、存储、加工、检索和服务工作的文献信息机构。又称专利文献中心、专利文献馆。
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direct cropping
direct cross
direct cross-border securities offerings
direct current
direct current amplifier
direct current arc furnace steelmaking
direct current arc source
direct current bridge
direct current bridge, DC bridge
direct current, DC
direct current discharge
direct current fields in whole space
direct current Josephson effect
direct current motor
direct current motor, DC motor
direct current plasma
direct current plasma source
direct current plasma source (DCP)
direct current polarography
direct current power supply
direct current prospecting instrument
direct current sputtering
direct current tachogenerator
direct current transmission
direct-current transmitting methods of working face
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