The first approach was simply to have #ifdefs in code for the two systems supported; for instance, BSD and System V.
第一个方法很简单,在代码中使用 #ifdef 以支持两种系统,例如 BSD 和 System V。
The design approach of internal structure parameters of flat fan nozzles with a lateral V-shaped cut was presented.
对侧向V型狭缝式扁平扇形喷嘴的内部结构参数设计方法进行了研究。
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