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牺牲层技术
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sacrificial layer technology
牺牲层技术
在表面微加工工艺中,为形成微机械结构的空腔或可活动的微结构,先在下层薄膜上沉积所需的结构件,再用化学刻蚀剂将此层薄膜腐蚀掉而不损伤微结构件,得到上层薄膜结构(空腔或微结构件)的加工方法。
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road transportation employee
road transportation for bulky cargo
road transportation of dangerous goods
road transportation of open pit
road transportation operation permit
road transportation safety
road transport organization and management
road transport volume
roadworthiness certificate of motor vehicle
roak
Roald Amundsen
Roald Hoffmann
roaming
Roaming along the Pond
roaming reaction
Roamnce at the Turning of Five Dynasties and Northern Song
Roar, China
Roar Chinese
roaring
Roaring Flame of the Eastern Battlefield
roaring in equine
Roar! The Yellow River
roasted eel processing equipment
roasted fish fillet processing equipment
roasted green tea
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