Later 90 years, with the amount of big tanks increasing, the cost of repair and maintenance increase.

90年代以后，大型储罐的数量连连增加，其检修、维护和改造费用更高。

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Later 90 years, with the amount of big tanks increasing, the cost of repair and maintenance increase.

90年代以后，大型储罐的数量连连增加，其检修、维护和改造费用更高。

youdao