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yangguangsnow
张小电1301
人参娃娃小辫子
P或in English
patent right
invent [ɪn'vɛnt] 发明 变形 invention 发明
3 procedures of patent application: substantive examination, publication and gra
The invention of infrared snsors water saving system help us succeed in applica
patentj既是名词 还是形容词性
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