So a pendulum one meter long has a period of about two seconds.
因此1米长的钟摆，所用周期是2秒。
2
In Beijing, the average price of a newly-constructed unit dropped to less than 20-thousand yuan per square meter, more than 10 percent lower than the same period last year.
在北京，一个新建单位平均价格降到每平方米低于2万元，比去年同期下降了10%。
3
However, the existing heat meters in the actual operation exposed the shortcoming of too much power which leads to the short using period of the meter.