... vacuum pugmill真空捏泥机 vacuum venting真空通气 vacuum-forming molds真空成形模 ...
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vacuum venting device 真空透气装置
Vacuum venting system 真空排气系统
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Compared with the control, the vacuum package or adding deoxidant package with materials of low venting quality can constrain the accelerating speed of PV and AV, and delay rancidity.
采用低透气性的包装材料进行真空包装或添加脱氧剂包装，可明显抑制过氧化值和酸价的增加速度，延缓酸败。
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