VD4
例句释义:1.Nowadays, Large quantities of VD4 Vacuum Circuit Breakers have been installed in the Power Station, and satisfactory effects have gained.VD4真空断路器已在电站获得了批量应用，取得了优异的使用效果。
2.The effect of the mole ratio of D4 and VD4 on polymerization stabipzation was explored.探索了D4和VD4物质的量之比对聚合稳定性的影响。
3.When the mole ratio of D4 and VD4 in siloxane monomers is above 10: 1, the emulsion copolymer is steadily polymerized .当硅氧烷单体中D4和VD4物质的量之比大于10：1时，该共聚物乳液聚合稳定性好。