是啊，我看这个也是不太明白，下面是我从
www.fxwords.com查到的一些解释。应该跟版主的理解一样：由于外汇交易并不是中央集中式的，所以计算交易量是不可能的，于是volume就是计量价格变化/波动(tick)的次数。
ticket: This is the smallest possible movement in the price of a security. A tick may also be called a minimum fluctuation.
Volume: Foreign Exchange on the other hand is traded on the Interbank Market, a network of thousands of banks. Because FX has many different points of trade, volume is nearly impossible to track.
Tick volume measures each tick higher or lower in price action as a unit of trade. This measurement side-steps the problem of being unable to track actual trade, but it also fails to account for offsetting trades that occur at the same time.
上面提到volume算是部分解决无法计算交易量的问题，不过如果相反的交易同时进行的话，由于被抵消掉，就没有tick，也就使得交易量不准了。
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本帖最后由 caisd 于 2007-12-7 23:37 编辑 ]
