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鉆機(jī)動(dòng)力頭為什么下滑,? |
點(diǎn)評(píng)
不好意思,剛說(shuō)錯(cuò)了,應(yīng)該用的是平衡閥而不是液壓鎖來(lái)防止動(dòng)力頭下滑吧?
希望高人不吝賜教!謝謝!
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