Demonstrate how the system identifies base period.

演示系统如何识别基本周期。

youdao

The contract performance covers a 6 month base period with four one-year option periods.

合同日期包括6个月的基本期和四个为期一年的选择期。

youdao

They compare average temperatures at any given time and place to a long-term average, or base period, for each area.

在每个地区，他们都用一个时间点的平均气温和长期或者一段时间内的平均气温进行比较。

youdao

Also, stocks will typically consolidate after advancing 20% to 25%, so instead of waiting out the consolidation, I take advantage by reallocating my 20% profit to another stock that is breaking out from a consolidation period or base pattern.

FORBES: Mimic Buffett, Lynch And O'Neil With Rules-Driven Investing

The 1933-34 devaluation of the dollar caused the money supply to grow by over 60% from April 1933 to March 1937, and over that same period the monetary base grew by over 35% and adjusted reserves grew by about 100%.

WSJ: Arthur B. Laffer: Taxes, Depression, and Our Current Troubles

"The formula effect generally, and particularly in the case of clothing, is dependent not just on the choice of index but also on the characteristics of the price movements and levels being measured, sample design, choice of base period and price collection methods, " said its spokeswoman Jill Leyland.

BBC: Inflation: No change to RPI calculation