Barroalso estimates tax multipliers based on the effects on GDP of changes inaverage marginal tax rates from federal and state and local income taxes, andsocial security payroll taxes.
Barro从联邦政、州以及各地方的所得税和社会保障工资税得出平均边际税率 * ，他也基于平均边际税率的变化对GDP的影响而估算出税收乘数（tax multipliers）。
To optimize the operation of power system, it is necessary to establish security constrained economic dispatch(SCED) and introduce locational marginal pricing(LMP)method.
为了实现电力市场的优化运营，关键是要建立安全约束经济调度与节点边际定价机制。
The impact on the environment of pressing ahead (and on energy security, for that matter) would be marginal at best.
继续推进管道建设对环境（就此而言，对能源安全）的影响最多也是微乎其微。
The impact on the environment of pressing ahead (and on energy security, for that matter) would be marginal at best.
继续推进管道建设对环境（就此而言，对能源安全）的影响最多也是微乎其微。
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