They are Peak-Peak detect and Passing 0 detect.

分别是峰值检验和过0检验两种方法。

youdao

That percent grew to the peak of the market in 1999 but after the peak in 2000 it began to fall.

那个比例在1999年达到市场顶峰，但却在2000年达到顶峰后开始下降。

youdao

Callers now pay 33 cents during peak hours and 30 cents during off-peak hours.

现在，主叫方在高峰时段支付33美分话费；而非高峰时段则是30美分。

《柯林斯英汉双解大词典》

"The expected decline in world hunger in two thousand ten is primarily the result of better access to food as the global economy recovers, and food prices remain below their peak level of mid-two thousand eight."

VOA: special.2010.09.21

I wrote this book in 2000 right at the peak of-- fortunately right at the peak of the stock market.

我2000年写这本书的时候,当时希勒教授在书中提醒投资者注意泡沫风险 股市正处于最高点 2个月后此预言果然应验

耶鲁公开课 - 金融市场课程节选

We had a similar, even higher price-to-earnings ratio of about forty-six at the peak in 2000 and it corrected way down.

000年时我们的市盈率甚至更高,达到了46,后来经过修正降低了

耶鲁公开课 - 金融市场课程节选

Off-peak pricing is normally around half as much as on-peak, but peak pricing can be as much as 10 times higher than off-peak in some parts of the country.

ENGADGET: Ford teams up with Eaton, Whirlpool and SunPower to create MyEnergi Lifestyle, hopes to reduce everyone's CO2 footprint

Put us on the path to the right kind of "peak oil" -- and peak carbon -- the peak that comes, not because we find less and less, but because we want less and less.

CNN: 'Peak oil' doomsayers proved wrong

However, the real money saver is you can get peak and off-peak carnets to mix and match your tickets.

BBC: More ways to save money on train fares