来自 百度文库 喜欢 0 阅读量: 8 专利类型: 外观设计 申请(专利)号: CN201730653235.5 申请日期: 20171219 公开/公告号: CN304705229S 公开/公告日期: 20180629 申请(专利权)人: 杜冬芒 发明人: 杜冬芒 国省代号: CN440514 收藏 引用 批量引用 报错 分享 文库来源 求助全文 不倒翁故事机[...
Coal has always been the poor cousin of oil and gas in terms of energy stock sentiment. Perhaps that's because of past disappointments caused by shipment and mining problems, or maybe it's because the sector lacks the excitement of big reserves upgrades from single drilling results. But ...
Have humans been sharing the planet with other intelligent life for millions of years without realizing it? In Defense of Dolphins combines accessible scie... T White 被引量: 64发表: 2007年 Infrared Light Curves and the Detectability of Close-In Extrasolar Giant Planets orbital parameters for a...