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etch造句
Thesecondistouseagoodetchresist.Thisunitgroupalsoincludesworkerswhoetchorchemicallymillmetalpieces.Everynode(thelittletriangularetch)onthestemisapotentialnewbloom.They'veusedlaserstoetchtheYangchengn...
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etch pit造句
Germaniummonocrystal--InspectionofdislocationetchpitdensityHowever,thepureedgedislocationiseasilyetchedalongthedislocationline,inducinganetchpitofinvertedhexagonalpyramidalignedwiththesurfacestep.Stan...