...产品技术变化；最终需求结构；节能减排 [gap=1916]e; energy conservation and consumption reduction; energy utilization efficiency; product technical change; final demand structure; energy conservation and emission reduction ..
The product change from toammonium nitrate to NPK complex fertilizer in the respects ofraw materials, technicalroutesandproductionwere given in this article.
This publication makes clear, freedom of expression is not just a by-product of technicalchange and it must be protected by legal and regulatory measures that balance a variety of potentially conflicting values and interests in a complex global ecology of choices.
The Organization also believes that freedom of expression is not just a by-product of technicalchange: it must be protected by legal and regulatory measures that balance a variety of potentially conflicting values and interests in a complex global ecology of choices.