冷藏肉制品和冷冻肉制品在储藏、运输和陈放期间要求冷链不间断，而货架寿命并不长。
Chilled and frozen meat products require an uninterrupted cold chain during storage, transportation and display and have a short shelf life.
一旦除去亚硫酸钠和四硫硫酸钠，冷冻干燥后，A链单体大部分转变成二体。
After the removal of the sulfite and tetrathionate by dialysis and lyophilization, the A-chain monomer was transformed gradually into the dimer.
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