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赫罗图上大多数恒星密集在由左上方(高温、强光度)至右下方(低温、弱光度)、沿稍微弯曲的对角线的狭窄带区内,形成一个明显的序列。又称主序。
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International Forum on Police Education Cooperation
International Frequency Registration Board
International Fund for Agriculture Development
International Fund for Agriculture Development,IFAD
INTErnational Gamma-Ray Astrophysics Laboratory
International Gamma-Ray Astrophysics Laboratory
international gateway port
international geomagnetic disturbed day
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International Go Federation
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International Grains Agreement
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International Gravity Standardization Net 1971
International Guidelines for Commercial Advertising Practitioners
International Guidelines for Equivalency and Reciprocity of Qualifications for LIS Professionals
International Guidelines for the Management of Deep-sea Fisheries in the High Seas
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