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沙波纹
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沙波纹
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干热河谷
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sand ripple
沙波纹
在河流、三角洲、潮滩、沙漠等区域,在风力、水流反复作用下,松散沙质表层形成波纹状微地貌。
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non metal
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nonmetallic mineral filler
nonmetallic mineral resources of China
nonmetallic minerals
nonmetallic ore for agricultural and animal busbandry
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nonmetallic ore for stone material
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nonmetallic ore resource
non-metallic ultrasonic test instrument
nonmetal-lined equipment
non-metallurgical alumina
non-metal pipeline
non-methane hydrocarbon
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更新时间:2026/7/3 21:16:39