By comparison, the chemicalpower generated by a rocket equals one half the thrust times the exhaust velocity.
相比之下，火箭的化学能功率是推进力的一半乘以排气速度。
2
Information plays an important role both in the course of basic research and industrialization for chemicalpower sources.
信息的获取在化学电源的研究和生产过程中起到至关重要的作用。
3
So, people are seeking cheap, security, chemicalpower material of secondary lithium batteries which friendly to environment and with excellent performance.