求翻译：以1993—2000年的美国公司数据为研究样本，分别以当期股票期权、不可执行期权、可执行期权、限制性股票和股票所有 权五个指标来衡量股权激励的程度，是什么意思？

U.S. companies to 1993-2000 data for the study sample, respectively, current stock options, can not exercise the option, the executable options, restricted stock and stock ownership of the five indicators to measure the degree of incentive stock options,

In 1993 - 2000 the United States company data to study sample, respectively, to be implemented when the stock options, options, and can be implemented all options, restricted stock and stock option 5 indicators to measure the extent equity-based incentives.

As studies the sample take 1993-2000 year American Corporation data, respectively by when the time stock option, cannot carry out the option, may carry out the option, the restrictive stock and the stock property rights five targets weighs the stockholder's rights drive the degree,

1993-2000 United States company data samples for research, a stock options, are not executable in the current period of each option, executable options, restricted stock and stock ownership five indicators to measure the degree of equity incentive,

1993-2000 United States company data samples for research, a stock options, are not executable in the current period of each option, executable options, restricted stock and stock ownership five indicators to measure the degree of equity incentive,