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snake melan cloth
菜瓜布
纤维经饱和浸渍或喷洒黏合固网,黏合剂内常用酚醛树脂或环氧树脂作硬化剂,以金刚砂细粒(粒度180~320号)作磨料的产品。
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reference frame of center of masses
reference frequency standard
reference frequency synthesizer
reference great circle
reference group
Reference Guide for Books
reference input
reference interaction site model
reference leak
reference level
reference light
reference line
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reference material (RM)
Reference Materials for Printing Movable Type Research
Reference Materials for Teaching Chinese Archival History
reference materials of geoanalysis
reference materials of lipid
reference measurement method in chemistry
reference measurement standard
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reference method for geoanalysis
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reference model adaptive control
Reference Model for an Open Archival Information System
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