除草剂
发表于 2025-3-28 17:16:35
Richard D. Southgate MD,Stephen L. Kates MDlly from the work that manganese is possible to use for alloying of powder steels sintered also in practice in H/N atmospheres with low purity and also in pure nitrogen - cheaper than hydrogen without some of the associated problems. Current trends in the field are also presented to the reader.978-1-907343-90-2978-1-907343-75-9
客观
发表于 2025-3-28 21:27:17
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粗鲁性质
发表于 2025-3-28 23:41:22
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窃喜
发表于 2025-3-29 04:55:07
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