但是，斯坦利认为在较高温度下，也应该有小却明显的水密度波动出现。
Stanley, however, believes there should be small but discernible traces of thisbehaviour at higher temperatures too - seen as fluctuations in water'sdensity.
结果表明：气泡是影响分选精度的重要因素，其体积分率的变化与床层密度波动密切相关。
The result shows that the bubble is an important factor influencing coal separation, and the variation of its volume fraction is closely related to the variation of density of ADMFB.
最重要的一点是在电离层的电子和其他带电粒子的密度是波动的。
One of the most important of these is a fluctuation in the density of electrons and other electrically-charged particles in the ionosphere.
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