zero line

基本解释

The earthquakes occurred in vicinity of the negative area or the zero line.
地震都发生在剩余异常的负值区或零值线附近。
The paper presents the supposed zero line method which has clear concept and can simplify the calculation procedure.
本文提出了假想零线的方法，概念清楚，能够大大简化计算过程。
When the wires are multiphase conductor, it should be easy for us to distinguish the colors, and the color of phase should be different from that of the zero line.
当配线采用多相导线时，其相线的颜色应便于区分，相线与零线的颜色应不同。

So this is the percent error and what you see here is that if the number is below the zero line it means people underestimated the calories, and the bars that go above means people overestimated the calories.
这是百分比误差,你们看,如果数字低于零,这表示人们低估了卡路里,高于零表示人们高估了卡路里
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选
So all of these programs or commands that we've been using thus far for the piece set in class, take what we call command line arguments, they are the zero or more words that follow the program's name.
所有我们一直在课堂上使用的,这些程序或者命令，携带着命令行参数，它们是跟在,程序名的后面的一个或多个单词。
哈佛公开课 - 计算机科学课程节选
So yes, it should be zero at zero, but I made the line too thick.
它在原点处应该是零的，但我这里线画得太粗了。
麻省理工公开课 - 化学原理课程节选

Seven weeks after the highs, the MACD- His dropped below the zero line (line d).
FORBES: Demystifying the MACD