FDN与木钙复合，以缓凝剂控制坍落度经时损失，以保水剂降低混凝土泌水率，配制出混凝土坍落度经时损失较小、性能优良的多元复合泵送剂。

An excellent pumping admixture was made up by use of FDN compounded with calcium lignosulphonate, retarder for controlling slump loss and water retaining admixture for reducing water segregation rate.

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强迫循环条件下，压水堆一回路主循环泵有效压头的损失随喷射泵阻力系数的增加而增加；

The loss of efficient head of circulation pump in the primary loop of PWR will increase with the increase of resistance coefficient of JetPump under forced circulation.

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另外，通过燃料置换水泵注入硼酸，该泵还可避免主回路冷却水损失的问题扩大。

Also, it prevents expansion of the trouble of the coolant loss by injecting boric acid of the fuel replacement water pump into the reactor core.

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