然而，在创建虚表(或视图)之前，应用服务器不能使用表。

However, the tables are not ready to be used by the application server until virtual tables (or Views) have been created.

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另一个限制是，不能在TimeSeries虚表上创建索引。

Another limitation is that you cannot create indexes on TimeSeries virtual tables. Listing 11 shows how to build virtual tables for the baseball example.

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本文论证了水平虚工序构成的线路段不能作为计算线路段。

This paper shows that the line segment made of the horizontal imaginary process cannot be regarded as the computing line segment.

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