To determine whether differences in national trends in tuberculosis incidence are attributable to the variable success of control programmes or to biological, social and economic factors.

判断不同国家结核病发病率趋势的差异是否可归咎于结核控制规划的成效或生物学、社会和经济因素。

youdao

According to the differences of soil water potential in the farmland, variable irrigation can save water as well as raise economic benefit.

依据农田内土壤含水率的差异性，有针对性地进行变量灌溉，既可节约用水又可提高经济效益。

youdao

There are variable capital concepts in the different economic time, and different capital concept decides the arrangements of enterprises rights and accounting behaviours.

不同的经济时代有不同的资本观念，而不同资本观念决定企业权利安排，进而决定会计行为。

youdao

This is because the rate of economic growth is the only variable that really matters when it comes to federal finances.

FORBES: Before Going Over The Fiscal Cliff, Let The Markets Score The Competing Tax Plans

Progress on monetary reform is the overlooked, all important variable that will shape the outlook for financial markets, economic growth and the prospect for balancing the budget of federal, state and local governments, to say nothing of the budget of the average American family.

FORBES: The Budget Stalemate Shows The Need For Monetary Reform