所谓“两害相权取其轻”,当我们进行多线程编程时,就必须在多个设计决策与权衡中做出一个选择。
This specific example is but one of several design decisions and tradeoffs that we are forced to make when doing multi-threaded programming.
种植一般是围绕季相进行设计,来达到园景的四时不同。
Planting may be designed according to season so that different parts of a garden bloom at different times.
该文讨论了为PPS抽样的二相抽样时,其样本单位数的最优设计问题。并结合实例进行了分析。
In this paper, we given an approach for optimum design of sample sire in two-phase sampling for PPS, and discussed an example.
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