An exception is the function ST_Distance, which must be used in a less-than comparison with an arbitrary distance.
一个例外是ST_Distance函数，它必须出现在针对一个任意距离的小于比较式中。
By comparison with analogue AC servo system, some remarkable features of digital AC servo system, such op programming function, system stability and system performance are described.
通过与模拟交流伺服系统的比较，说明了全数字交流伺服系统可编程能力强、系统稳定性好、系统性能提高等特点。
Next, through with in other sculpture form modeling language and the function comparison reflected Feasting pillar has the various types culture connotation under the lucky thought influence.
其次，通过与其它雕塑形式造型语言和功能上的比较，反映出拴马桩在民间求吉思想影响下的极为丰富的各类型文化内涵。
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