Aerosol concentration in Beijing area and the yearly change of its chemical characters are discussed in this paper.

本文讨论了北京地区气溶胶浓度及其化学特性的年变化。

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Based on soil water infiltration experiments in corn field, this paper analysed and discussed yearly change characteristics of soil water infiltration.

土壤水分入渗特征参数的空间变异规律是区域尺度参数估值的基础。

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First is climate change, marked by a 1-degree Fahrenheit rise in average yearly temperature across the western states.

首先是气候变化，记录显示，西部各州的年平均气温上升了1华氏度。

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Essentially, this is the yearly percentage change in cash value after adjusting for dividends received, premiums paid and the cost of the death coverage itself.

FORBES: Old but still kicking

Margin debt, a seldom-referenced indicator of confidence and speculation has contracted on a yearly percentage change as much as in the bear markets of '74, '82, '87 and '01.

FORBES: Manic Depression To Normalization

Healthy people with no symptoms of a heart problem do not need to undergo stress imaging tests when they go in for a yearly checkup as the test rarely leads to any real change in patient care and management.

FORBES: Physician Organizations Voluntarily Heal Themselves To Save Healthcare Dollars