厂商 :江苏昆山雷德莱恩工业物资有限公司
江苏 苏州- 主营产品:
- Rexroth力士乐
- DAIKIN大金
- YUKEN油研
供应Rexroth力士乐液压泵A10VSO100DFR/31R-PPA12K02昆山雷德莱恩工业物资有限公司授权代理商现货Rexroth力士乐如下产品:
A10VSO71DR/31R-PPA12N00
A10VSO71DRG/31R-VPA42N00
A10VSO71DFLR/31L-PPA12N00
A10VSO71DR/31R-PPA12K27
A10VSO71DRG/31R-VPA12N00
A10VSO71DFR/31L-PPA12N00
A10VSO71DR/31R-PPA12K02
A10VSO71DRG/31R-PPA42N00
A10VSO71DFR1/31L-PPA12N00
A10VSO71DFR/31R-PPA12N00
A10VSO71DRG/31R-PPA12N00
A10VSO71DG/31L-PPA42N00
A10VSO71DFR/31R-PPA12K27
A10VSO71DR/31R-VPA42N00
A10VSO71DG/31L-VPA12N00
A10VSO71DFR/31R-PPA12K02
A10VSO71DR/31R-VPA12N00
A10VSO71DG/31L-VPA42N00
A10VSO71DFR1/31R-PPA12N00
A10VSO71DR/31R-PPA42N00
A10VSO71DR/31L-PPA12N00
A10VSO71DFR1/31R-PPA12K27
A10VSO71DG/31R-VPA42N00
A10VSO71DR/31L-PPA42N00
A10VSO71DFR1/31R-PPA12K02
A10VSO71DG/31R-VPA12N00
A10VSO71DR/31L-VPA12N00
A10VSO71DFLR/31R-PPA12N00
A10VSO71DG/31R-PPA42N00
A10VSO71DRG/31L-PPA12N00
A10VSO71DFLR/31R-PPA12K27
A10VSO71DG/31R-PPA12N00
A10VSO71DFLR/31R-PPA12K02
A10VSO71DFR1/31R-VPA42N00
A10VSO71DFR1/31R-VPA12N00
A10VSO71DFR1/31R-PPA42N00
A10VSO71DFR/31R-VPA42N00
A10VSO71DFR/31R-VPA12N00
A10VSO71DFR/31R-PPA42N00
A10VSO71DFLR/31R-VPA42N00
A10VSO71DFLR/31R-VPA12N00
A10VSO71DFLR/31R-PPA42N00
供应Rexroth力士乐液压泵A10VSO100DFR/31R-PPA12K02理想液体: 既无粘性又不可压缩的液体称为理想液体。
2、定常流动: 液体流动时,若液体中任何一点的压力、速度和密度都不随时间而变化,则这种流动就称为定常流动。否则,只要压力、速度和密度有一个量随时间变化,则这种流动就称为非定常流动。
3、一维流动: 当液体整个作线形流动时,称为一维流动。
4、迹线、流线、流束和通流截面
迹线: 流动液体的某一质点在某一时间间隔内在空间的运动轨迹。流线:表示某一瞬时,液流中各处质点运动状态的一条条曲线。在此瞬时,流线上各质点速度方向与该线相切。在定常流动时,流线不随时间而变化,这样流线就与迹线重合。由于流动液体中任一质点在其一瞬时只能有一个速度,所以流线之间不可能相交,也不可能突然转折。
流束: 在一条的流动空间中任意画一不属流线的封闭曲线,沿经过此封闭曲线上的每一点作流线,由这些流线组合的表面称为流管。流管内的流线群称为流束。
平行流动:流线彼此平行的流动。
通流截面: 流束中与所有流线正交的截面称为通流截面。截面上每点处的流动速度都垂直于这个面。
缓变流动:流线夹角很小或流线曲率半径很大的流动。 平行流动和缓变流动都可算是一维流动。
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