对于一个实验,往往存在着多条设计思路,那么应该如何得到一个最优设计方案呢?一般来说,实验方案的优化设计主要有如下三条原则:1.简便性原则即要求所设计方案原理简单、操作方便.各量易测.应尽量避免那些原理复杂、操作繁琐和被测量的数据不易直接测量的方案.2.安全性原则 For an experiment, there are often many design ideas, then how to get an optimal design? In general, the optimal design of the experimental program has the following three principles: 1. The principle of simplicity requires that the design of the program is simple , Easy to operate. The amount of easy to measure. Should try to avoid those principles are complex, the operation is cumbersome and the measured data is not easy to directly measure the program. 2. The principle of security