引起极大兴趣 发表于 2025-3-21 19:58:36

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做方舟 发表于 2025-3-22 00:02:54

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ethnology 发表于 2025-3-22 02:08:47

Eougenious L. Ivchenko,Grigory Pikusngineering, environmental engineering, green coal mining, sustainable water resource management, and effective measures to balance mine safety and ecological conservation..In the disciplines of mine hydrogeology and mining engineering, there have always been difficulties in the theoretical interpret

不愿 发表于 2025-3-22 07:47:16

Eougenious L. Ivchenko,Grigory Pikusts, or an . or precast reinforced concrete slab. The surface of these roofs must receive a waterproof covering, and where their inherent thermal insulation is inadequate, an insulating slab or board must be incorporated in the roof system. . are produced by manufacturers of foamed concrete products

crescendo 发表于 2025-3-22 11:50:26

Eougenious L. Ivchenko,Grigory Pikusts, or an . or precast reinforced concrete slab. The surface of these roofs must receive a waterproof covering, and where their inherent thermal insulation is inadequate, an insulating slab or board must be incorporated in the roof system. . are produced by manufacturers of foamed concrete products

indignant 发表于 2025-3-22 15:24:47

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Canvas 发表于 2025-3-22 17:41:31

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描述 发表于 2025-3-22 22:30:27

Eougenious L. Ivchenko,Grigory Pikusple jointing methods. The second utilises trusses, trussed rafters and trussed purlins which are assembled on site before being lifted into position, or are completely fabricated at works. The first category is based upon traditional methods with modern refinements; the second upon calculated and te

committed 发表于 2025-3-23 04:30:03

Eougenious L. Ivchenko,Grigory Pikusof plants on roofs can provide places where wild animals and plants can survive and reproduce. Chosen cultivation practices and plant species can improve habitats and present more opportunities for wildlife and if flowering plants are grown together with vegetables, wild pollinators and domestic bee

Asparagus 发表于 2025-3-23 05:59:17

Eougenious L. Ivchenko,Grigory Pikusof plants on roofs can provide places where wild animals and plants can survive and reproduce. Chosen cultivation practices and plant species can improve habitats and present more opportunities for wildlife and if flowering plants are grown together with vegetables, wild pollinators and domestic bee
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查看完整版本: Titlebook: Superlattices and Other Heterostructures; Symmetry and Optical Eougenious L. Ivchenko,Grigory Pikus Book 19951st edition Springer-Verlag Be