4 . when you have to wash by hand put in on washboard or rub it by hand . dry it in spin - drier 4 .不得已得用手洗时放在搓板洗或者两手拿着搓后漂洗，放在专用脱水机里脱水就可以。
2.
4 . when you have to wash by hand put it on washboard or rub it by hand . dry it in spin - drier 4 .不得已得用手洗时放在搓板上搓洗或者两手拿着搓后漂洗，放在专用脱水器里脱水就可以。
3.
Abstract : the mechanical structure of washboard valve leveler is introduced , the alignment mechanics of curving bar and hemilateral pan of the valve is analyzed , the mechanical , the shape of washboard and the effect of alignment quality and efficiency cause by shrink - adaption range of the valve between two washboard are discussed 文摘:介绍了搓板式气门校正机的机械结构，分析了气门杆部弯曲校直和盘部偏歪校正的机理，讨论了机器结构，托板形状和气门在两搓板间的过盈配合量对校正质量和效率的影响。
