这些联盟已经确保了半个多世纪的地区和平与安全，为该地区引人注目的经济崛起构建了有利的环境。
They have underwritten regional peace and security for more than half a century, shaping the environment for the region's remarkable economic ascent.
这种阀门的进口和阀体为一件式铸件，确保了阀瓣，阀座和芯轴的对齐和平稳运动。
The valve inlet and body are one integral casting assuring proper alignment of disc, seat and spindle for smooth action.
这种阀门的进口和阀体为一件式铸件，确保了阀瓣，阀座和芯轴的对齐和平稳运动。
The valve inlet and body are one integral casting assuring proper alignment of disc, seat and spindle for smooth action.
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