Chylomicron
发表于 2025-3-21 20:03:22
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鄙视
发表于 2025-3-21 23:40:56
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群居男女
发表于 2025-3-22 00:38:24
The forging of metals,eak easily. Some metal components like crankshafts, connecting rods, spanners, etc. have to stand up to conditions of . when in use. Components produced by the ., are much stronger than those produced by casting or by machining from solid bar material. The reason for this lies in the fact that the .
不适
发表于 2025-3-22 05:58:43
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intuition
发表于 2025-3-22 10:18:34
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闷热
发表于 2025-3-22 14:08:09
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闷热
发表于 2025-3-22 18:07:25
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Palliation
发表于 2025-3-22 22:25:36
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surrogate
发表于 2025-3-23 04:08:04
The manufacture of plastic goods,However the moulds used are very expensive, and such processes can only be profitable if large quantities of goods are produced. The raw materials used in the manufacture of plastic goods are usually in the form of ., or ..
漂亮
发表于 2025-3-23 06:24:20
https://doi.org/10.1057/978-1-137-50160-8hand tools has been almost eliminated. However, hand tools are still required for many purposes in industry, like the making of . and ., and for the . and . of equipment. Some of the most common hand tools are shown in Fig 3.2 and a brief description of their use is given below.