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機(jī)械設(shè)計(jì)的根本立腳點(diǎn)是固定力學(xué)/流體力學(xué)/電磁 么,? |
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市場(chǎng)決定的,,上層決定的,,
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點(diǎn)評(píng)
今天才仔細(xì)打量“非標(biāo)設(shè)計(jì)”這個(gè)概念,到底怎么界定“非標(biāo)”的界限,,拿一個(gè)例子來(lái)說(shuō):一輛轎車的車長(zhǎng)增加30厘米算不算非標(biāo),,50厘米算不算?
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