兵团 发表于 2025-3-25 06:14:55
Heiner Abelsbbed stick of plastic will pick up pieces of paper—a child’s horseshoe magnet will pick up nails. On the laboratory scale, a typical electromagnet may have an attractive force between its iron poles amounting to 1 ton weight, orders of magnitude larger than any attainable force between two condenserconstitute 发表于 2025-3-25 09:08:35
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Ontogeny of Organ Development in Rice Plant, position on the stem axis. Initiation of panicle primordial marks the transition of vegetative to reproductive sage. The shoot apical meristem, instead of producing a leaf or tiller initial, is converted to an inflorescence (rachis) meristem and the floral fate of the shoot meristem is established.Orchiectomy 发表于 2025-3-25 22:49:29
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Mineralogical Composition of Leucite-Bearing Rocks,kite, wadeite, priderite, apatite, magnetite, ilmenite, and spinel. Different combinations of the above minerals are present in the various types of leucite-bearing rocks. The phase chemistry and chemical variation of these minerals are described below. The phase equilibrium relations among these minerals will be discussed in the later sections.过剩 发表于 2025-3-26 08:27:12
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