apply for a patent
45°或45°以上张开的
patent spreading; divaricate
暂无补充释义。
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patent spreading; divaricate
暂无补充释义。
apply for a patent
press-button (press fastener, snap-fastener, press stud, patent fastener)
product patent
patent blue
patent
patent ambiguity
mary janes in black patent leather
patent attorney