The initial corrosion time may be decided by structural protection degree and penetration rate of corrosive agents.
而初始时间（或去钝时间）的确定则取决了结构防护程度及有害介质离于的渗透速率。
The initial corrosion time may be decided by structural protection degree and penetration rate of corrosive agents.
而初始时间（或去钝时间）的确定则取决了结构防护程度及有害介质离于的渗透速率。
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