每10家企业就有4.46家迈过“高研发门槛”
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DENVER—The Global Positioning System is one of the few space programs that touches nearly every human life, and the stewards of the satellite navigation network are eager to populate the fleet with the latest and greatest spacecraft.
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나무 돌보는 ‘자연인’이 월300만원…나무의사 자격증 관심 커지는 이유는[은퇴 레시피]