本帖最后由 xrg0519 于 2010-10-13 17:58 编辑
1,设计使用寿命是指在正常平稳操作及正常维护条件下,根据既定介质对金属壁的均匀腐蚀总量不大于腐蚀裕量这一原则所确定的容器使用寿命。
The design service life is based on the principle of the total corrosion for metal wall uniform eroded by medium not more than the corrosion allowance, on the normal condition of balanced operation and routine maintenance.
2,设计使用寿命是指在正常平稳操作及正常维护条件下,基于搪瓷层没有产生失效的这一前提下所确定的容器使用寿命。 The design service life is based on the precondition of G-L Layer failure not occur, on the normal condition of balanced operation and routine maintenance. 不妥的地方,请指正,谢谢 |