...来看，企业投资决策中的实物期权主要有扩张期权（expansion option） 、放弃期权abandonmentoption和等待期权（waiting option）。
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同时实证研究揭示了如果提高建造过程的灵活性，等待期权的价值会受到削弱，开发临界值将降低。
Moreover the empirical study open out that if the flexibility in building process is increased, the value of defer option would be weakened and the critical value would be decreased.
只有等待期满的股票期权才可以执行，这是通常的做法。
The common way is that can be executed when the stock -options are expired.
在不确定的市场条件下，土地开发是一种等待型实物期权，可以通过实物期权定价方法进行决策。
Under uncertain investment circumstances, the land development should be regarded as a kind of call option, which can be deferred to maximize its expected value.
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