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laser drilling technology
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laser drilling technology
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特种加工技术
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laser drilling technology
激光制孔技术
通过聚焦后高功率密度的激光(通常应大于105瓦/厘米2)与材料作用,使材料在极短时间内受热汽化及熔化,其间瞬时产生的高压使气体迅速膨胀形成爆炸冲击气流把大多数汽化及熔化材料迅速溅射出去而形成小孔的技术。又称激光打孔技术、激光加工小孔技术。
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Film Criticism
film criticism
Film Cultural Center of Hong Kong
Film Culture
Film department of Commercial Press
film derivatives market
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film disk, thin film disk
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film distortion
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film distribution system of the United States
Film Distribution Training Course of Beijing Film School
film documentary
Filmdom in China
film editing
film electrophoresis
film experiments : persuasion for the american soldiers in world war Ⅱ
Filmfare Awards
film feed mechanism
film fibrillation
film financing
film flow
Film Forever, BFI
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