turbulency

常見(jiàn)例句

• The hollow sprue and suitable vacuum pressure is helpful to decreasing the pinhole,but,when the vacuity is too high,the liquid aluminum would become turbul...
  充型過(guò)程中施加一定的真空度有利於減少針孔,但真空度太高則會(huì)促使鋁液産生紊流,反而增加鑄鋁件的針孔,降低其密度。
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