An empty slot的意思|示意

Select an empty slot.

选择一个空材质。

As each thread tries to write data for the first time, it tries to find an empty slot of the memory and marks it as busy.

当每个线程第一次尝试写入数据时，它会尝试寻找一个空的内存槽位，并将其标记为忙碌。

Different motherboards have different amounts of PCI slots, for example, you may already have a PCI card installed, in which case just choose an empty slot to install your new PCI card.

不同的主板有不同数量的PCI插槽，例如，您可能已经安装了PCI卡，在这种情况下只需要选择一个空槽安装新的PCI卡。