4929| 16
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氣瓶通過(guò)一軟管向氣球內(nèi)充氣過(guò)程中的壓力計(jì)算 |
評(píng)分
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點(diǎn)評(píng)
管路壓力和油缸壓力多數(shù)時(shí)候都不等,連通器原理要求是靜止
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