The forestry ecology construction is a magnificent social system engineering.
林业生态建设是一项宏伟的社会系统工程。
The application of diesel engine fuel system is actually a matter of social application engineering.
柴油机燃油系的运用问题实质上是一个社会运用工程。
The application of diesel engine fuel system is actually a matter of social application engineering.
柴油机燃油系的运用问题实质上是一个社会运用工程。
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