WebSphere mq函数可以在任何可使用函数的地方进行调用：值子句、投影列表、查询过滤器、存储过程和触发器。

The WebSphere MQ functions can be invoked anywhere a function can be used: values clause, projection list, query filters, stored procedures, and triggers.

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在此代码中，可能导致出错的主要情况是ST _ Transform函数无法从给定的纬度和经度计算出投影坐标中的正确点值。

In this code, the main thing that can go wrong is that the ST_Transform function cannot compute a proper point value in projected coordinates from the given latitude and longitude.

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实验结果表明，利用混合投影函数可以相当精确地确定眼睛中心的位置。

Experimental results show that eyes can be located quite accurately by using hybrid projection function.

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