每年的监管制度都必须根据不同的情况来设定。
The proper regulatory regime has to be set case by case and year by year.
介绍了一种新的冶金结合复合钢管制造工艺及工业应用情况。
A new manufacture process and application instance of metallurgy integrated complex steel pipe is introduced.
介绍了一种新的冶金结合复合钢管制造工艺及工业应用情况。
A new manufacture process and application instance of metallurgy integrated complex steel pipe is introduced.
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