unintended inventory investment造句

Either positive or negative intended inventory investment can coincide with either positive or negative unintended inventory investment.
If customers buy more than expected, inventories unexpectedly decline and unintended inventory investment turns out to have been negative.
If customers buy less than expected, inventories unexpectedly build up and unintended inventory investment turns out to have been positive.
This is reflected in the presence of positive or negative unintended inventory investment . it can be shown by the graph below.
If these are indeed equal for a particular time period, there is no unintended inventory investment and there is goods market equilibrium.
It's difficult to find unintended inventory investment in a sentence. 用unintended inventory investment造句挺难的

Positive or negative "'unintended inventory investment "'occurs when customers buy a different amount of the firm's product than the firm expected during a particular time period.
At some point, there is a sustained decline in some type of spending for some reason . ( One reason may simply be that, once inventories reach their desired level, there stops being positive intended inventory investment; but there may be other reasons as well . ) Then there is positive unintended inventory investment as firms are caught by surprise by the external drop in demand and they fail to simultaneously lower their production.
At some point, there is a sustained increase in some type of spending for some reason . ( One reason may simply be that, once inventories sink to their desired level, there stops being negative intended inventory investment, which goes up from negative to zero; but again there may be other reasons as well . ) At this point there is negative unintended inventory investment as firms are caught by surprise by the external increase in demand and they fail to simultaneously raise their production.