“预约保险单”的概念、定义、翻译、参考文献-科学参考

单词	预约保险单
释义	预约保险单 Encyclopedia 经济学保险单释 open policy预约保险单保险双方对预计的保险标的在期初签发的保险单。约定承保条件，并于期末根据实际情况调整保险合同。又称开口保单、敞口保单。
随便看	central conic Central Conservatory of Music central control room central control system of wind farm cluster central coordinate system central core central curve central cylinder central dark field imaging central dark-field imaging central dark ground method central date central delay Central Department of Propaganda and Agitation of the Central Committee of the CPSU central derivative central diaphragm method central difference central difference; centered difference central difference notation central difference operator central difference quotient central dilation central disaster-prevention green space central dislocation of hip joint central distributed PV inverter system

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。