However, the technology is still in a relatively backward stage interiorly, and the practical application is still a long way to go.
然而在国内，该技术还处在一个比较落后的阶段，和实际应用还有相当一段距离。
The backward compatibility assessment, stage 1, is examined in the next section.
第1阶段(向后兼容性评估)将在下一部分中进行讨论。
On the other hand, China's steel industry is now in an important stage in its efforts to save energy, eliminate backward production capacity and control new additions to production capacity.
另一方面，中国钢铁行业正处于重要阶段，在努力节约能源，淘汰落后产能和控制新增加的生产能力。
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