“birth and death urn model”的概念、定义、翻译、参考文献-科学参考

单词	birth and death urn model
释义	birth and death urn model Encyclopedia 理学临床试验的自适应性设计释 birth and death urn model生灭瓮子模型临床试验中一种自适应的序贯随机分配病人的方法（自适应设计或自适应随机化）。
随便看	composite Simpson formula composites of lignocellulosic and inorganic cementing materials composite soilnailing wall support composite solid propellant composite spectrum composite-spectrum binary composite spinning composite state composite statement composite steel-form composite stochastic process composite structure composite structure bridge composite structure diagram composite structures composite structure system composite surface composite system composite tape composite trapezium formula composite turnover composite type composite valuation composite vector composite vegetable beverage

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。