As far as the complicate heavy equipment is concerned the process of research and development is a complicate and technology concentrated systems engineering.
对于大型复杂设备而言，其研制过程是一项复杂的、技术密集的系统工程。
Heavy floating crane is important equipment in the field of ocean engineering.
大型浮吊是重要的海洋工程作业设备。
Heavy floating crane is important equipment in the field of ocean engineering.
大型浮吊是重要的海洋工程作业设备。
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