相关线 meaning in Chinese

correlation line
relation line

The lines shown in these figures were fitted by the method of least squares .
这些图中的相关线是通过最小二乘法得到的。
Consequently , you should carefully check all relevant thread states when polling
因此，轮询时应仔细检查所有相关线程状态。
If this happens and is followed by an erroneous second release , the handle of an unrelated thread might be invalidated
如果发生这种情况，并且接着进行第二次错误释放，则某个不相关线程的句柄可能失效。