The present situation and technological progress of toughening modification of PVC are reviewed.

综述了目前国内外聚氯乙烯(PVC)增韧改性的研究状况和技术进展。

youdao

It briefly introduces the technological process present situation as well as some new research progress, and enhanced the technical reference for this kind of product production.

总结前人对盐水鸭的生产工艺的研究进展，在生产和储藏中存在的问题。

youdao

The optimization is conducted for the general layout of gas and steam united circulating power plant of Han Steel according to technological requirement and present situation, and it meets the demand.

分析了在钢铁企业建设中总图布置的重要性，根据邯钢燃气蒸汽联合循环发电厂的工艺需要并结合邯钢现状，在发电厂的建设中进行了总图布置优化。

youdao

At present, the US is one of the technological leaders in this field, but as Singer says this situation will not last forever.

BBC: Robot warriors: Lethal machines coming of age